Answer:
Option (D)
Explanation:
Which statement best explains the relationship between the physical environment and the achievements of early humans?
From the question, deduce that some - if not all - of the statements explain the relationship but only one explains it best.
For this reason, you look for the one that explains it best.
Answer: Option (D)
Option (A) is one of such options as described in the second paragraph above; it explains (to an extent) the relationship between the achievements of early humans and the physical environment but option (D) explains it better.
The most important thing achieved by early humans from their environment - among all the options listed - is food search tools. They made bows, slings and arrows for hunting from trees, twigs and other natural materials in their environment. They made water bottles from hides and skin gotten from slaughtered animals; and so on and so forth.
