Which of the Following Accurately Describes What Zachary, a 14-Month-Old

Which of the following accurately describes what Zachary, a 14-month-old, will do on being confronted with a steep slope when he is still a novice (new) walker?

A) He will refuse to walk down the slope, unless his mother urges him to do so.
B) He will refuse to walk down the slope, even if his mother urges him to do so.
C) He will try to walk down the slope as if he doesn't notice that it is there.
D) He will stop and crawl or scoot down the slope.