Prep1-43

43。
                             A
                        one-million-year-old
                        skull
                        bearing
                            traits
                            associated
                            both
                            with
                            Homo
                            erectus
                            and,
                            in
                            addition,
                            Homo

sapiens
                        has
                        been
                        found
                        in
                        the
                        Afar
                        region
                        of
                        Eritrea,
                        and
                        indicates
                        that
                            modern
                        humans
                        developed
                        much earlier
                        than
                        previously
                        thought.

(A)
                            both
                            with
                            Homo
                            erectus
                            and,
                            in
                            addition,
                            Homo
                            sapiens
                            has
                            been
                            found
                            in
                            the
                            Afar
                            region
                            of
                            Eritrea, and
                            indicates

(B)
                            both
                            with
                            Homo
                            erectus
                            and
                            Homo
                            sapiens
                            have
                            been
                            found
                            in
                            the
                            Afar
                            region
                            of
                            Eritrea,
                            which indicates

(C)
                            with
                            both
                            Homo
                            erectus
                            and
                            Homo
                                sapiens
                            has
                            been
                            found
                            in
                            the
                            Afar
                            region
                            of
                            Eritrea,
                            indicating

(D)
                            with
                            both
                            Homo
                            erectus
                            and
                            Homo
                                sapiens
                            and
                            found
                            in
                            the
                            Afar
                            region
                            of
                            Eritrea,
                            indicating

(E)
                            with
                            both
                            Homo
                            erectus
                            and
                            Homo
                            sapiens
                            have
                            been
                            found
                            in
                            the
                            Afar
                            region
                            of
                            Eritrea,
                            which indicates

答案: C

已经知道为什么选C了，一开始做的时候没找对主语skull，对该句结构把握不好，谁能帮忙分析下这个句子结构。

特别是skull
                            bearing
                                traits
                                associated
                                    with这个部分

谢谢