“calendar stick�

[garima99]

1. A "calendar stick" carved centuries ago by the Winnebago tribe may provide the first evidence that the North American Indians have developed advanced full-year calendars basing them on systematic astronomical observation.
(A) that the North American Indians have developed advanced full-year calendars basing them
(B) of the North American Indians who have developed advanced full-year calendars and based them
(C) of the development of advanced full-year calendars by North American Indians, basing them
(D) of the North American Indians and their development of advanced full-year calendars based
(E) that the North American Indians developed advanced full-year calendars based


[spoiler]what is wrong with D?[/spoiler]

[Frankenstein]

Hi,
D changes the intended meaning of the original sentence. D says that calendars are evidence of North American Indians but in the original sentence, calendars are the evidence of an action(North Americans developing advanced calendars).

[amit2k9]

D implicitly states that the evidence is for both N A Indians and the calenders.This is not the case. Hence POE.

In A,B and C them does not have a clear antecedent. hence POE.

E is clear.