Hominid hind limbs became longer and stronger than their front limbs over time. Also, the largest toe on the hind limbs became smaller and closer to the other toes. Which of the following best explains the reason for this general trend in hominid evolution that occurred over millions of years?
A. As hominids evolved, their brain size increased and their overall height decreased.
B. As hominids evolved, their grasping abilities increased, improving their climbing abilities.
C. Hominids evolved to arboreal lifestyles in order to increase access to food sources.

Question

Hominid hind limbs became longer and stronger than their front limbs over time. Also, the largest toe on the hind limbs became smaller and closer to the other toes. Which of the following best explains the reason for this general trend in hominid evolution that occurred over millions of years? 
A. As hominids evolved, their brain size increased and their overall height decreased. 
B. As hominids evolved, their grasping abilities increased, improving their climbing abilities. 
C. Hominids evolved to arboreal lifestyles in order to increase access to food sources.

anonymous · Answer

D. Hominids evolved to walk upright on their hind limbs, reducing the need for opposable toes.

anonymous · Answer

I think it is D because it is believed that hominids evolved this way. And considering that the hind limbs became longer and stronger, that must have happened so that way they can walk upright.

anonymous · Answer

I just need some other input, is all.

blues · Answer

I agree - I think it is D as well and for the same reasons.