Many scientists believe that bipedal locomotion (walking on two feet) evolved in early hominids in response to the move from life in dense forests to life in open grasslands. ██████████ █████ ████ ███████ █████ ████████ ██ ███ ████ ████ ████████ ███████ ████ ██ ██████ ████ ███ ██ ██████ ███ █████ ██████████ ████████ ███████ ██████████ ████ █████ ████ █████████ ███████████ ██████████ ████ █████ ████████ ███ █████ ████ ███ ███████████ █████████ ████ █████ ██████ ████████ █████ ██ ███ ██████ ██████ ███ ████████████████ █████████ ██████████ ███ ████████ ██ ███ ████ ████ ████████ ████ ███ ███████ ██████ ████████ ██ ████ █████ █████ ███████ ██ ████████ ██ ████████████ ████ ██ ███████ █ █████
The stimulus discusses the evolution of bipedal locomotion (walking on two feet) in early hominids. It suggests that this evolution may have been triggered by the move from dense forests to open grasslands. Bipedalism would have helped early hominids see over tall grasses, locate food, and avoid predators. However, it also would have been advantageous in forests for gathering food within standing reach and possibly for improving mating chances. Because it conferred substantial advantages in many scenarios, debate continues about its precise origins.
There is ongoing scientific debate concerning the origins of bipedalism.
Bipedalism aided early hominids in dense forests and open grasslands.
Which one of the following ██████████ ██ ████ █████████ ██ ███ ███████████ ██████
For early hominids, ██████ ████████████ ████ █████████ ████ ██████████ ████ █████████ █████████████
This comparative statement does not have any support. The stimulus only distinguishes between the two environments but does not say which one is more hospitable.
Bipedal locomotion would ████ ██████ █████ ████████ ██████ █████
The stimulus says in two places that bipedalism helped early hominids gather food.
Bipedal locomotion actually █████ ███ ██ ████████████ ██ ████████ ██████ ██ ████ █████████ █████████████
This is antisupported. The stimulus acknowledges that bipedalism conferred several advantages to those in grassland environments.
Bipedal locomotion probably ███████ █████ █████ ████████ ███ ███████████ █████████ ██████ █████████████
This is too strong to support. The stimulus does not answer where bipedal locomotion evolved and even acknowledges that debate continues surrounding its origins.
For early hominids, █████████ ████ ███ ████ ████████ ██ ████████ ████ ███ █████████ ███ ████████ ██████████
The stimulus identifies both gathering food and detecting/avoiding predators as advantages, but does not give one a preference over the other.
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