Fact 1: Behaviors that improve fitness increase through natural selection. Fact 2: Natural selection is the mechanism of evolution. Given the two facts above, what process increases behaviors that improve fitness?
Possible answers:
[1]. competition
[2]. sweating
[3]. humanization
[4]. evolution
[5]. movement
[6]. photosynthesis
[7]. sleep
[8]. cats
Answer:
[4].