GWD5-3求解!谢谢

wingh1121

In April 1997, HillaryRodhamClinton hosted an all-day White House scientific conference on new findings that indicates a child’s acquiring language, thinking, and emotional skills as an active process that may be largely completed before age three.

1. that indicates a child’s acquiring language, thinking, and emotional skills as
   
   
2. that are indicative of a child acquiring language, thinking, and emotional skills as
   
   
3. to indicate that when a child acquires language, thinking, and emotional skills, that it is
   
   
4. indicating that a child’s acquisition of language, thinking, and emotional skills is
   
   
5. indicative of a child’s acquisition of language, thinking, and emotional skills as
   
   

C除了后面it无指代外,前面用to v. 可以吗???
句子可以理解为host sth to...表目的吗?