Which of the following does not represent a condition required for natural selection to occur?

I’m stuck on this question cuz i’m stupid sksksksk

The vaccine in a flu shot contains weakened flu viruses. how does a flu shot work with the immune system? a. it destroys lymphocytes. b. it destroys macrophages. c. it activates macrophages. d. it activates lymphocytes.

Which feature of a human community is similar to a niche in a biological community