OG12 6 关于指代问题

加州女孩

In late 1997, the chambers inside the pyramid of the
Pharaoh Menkaure at Giza were closed to visitors for
cleaning and repair due to moisture exhaled by
tourists, which raised its humidity to such levels so
that salt from the stone was crystallizing and fungus
was growing on the walls.
(A) due to moisture exhaled by tourists, which
raised its humidity to such levels so that salt
from the stone was crystallizing
(B) due to moisture that tourists had exhaled,
thereby raising its humidity to such levels that
salt from the stone would crystallize
(C) because tourists were exhaling moisture, which
had raised the humidity within them to levels
such that salt from the stone would crystallize
(D) because of moisture that was exhaled by
tourists raising the humidity within them to levels
so high as to make the salt from the stone
crystallize
(E) because moisture exhaled by tourists had raised
the humidity within them to such levels that salt
from the stone was crystallizing
C Th e pronoun them seems to refer to tourists,
which is nonsensical; the entire construction
is awkward and wordy; would crystallize is
not parallel to was growing.
D Once again, them seems to refer to tourists;
the entire construction is awkward, wordy,
and ambiguous; crystallize is not parallel to
was growing.
E Correct. Th e causal sequence is clear, and
them clearly refers to chambers.
C中的指代问题我可以理解，因为C那个tourist是中心名词，但是我觉得D跟E中的tourist半斤八两啊，为啥D就错了E就对了呢？

lenaqiao

个人愚见：对于D选项，raising the humidity within them 修饰的是tourists，而E选项had raised
the humidity within them的主语是moisture。