External influences on development such as social support are said to constitute our

A) genome.
B) epigenetic marks.
C) environment.
D) natural selection.

Epigenetic Marks

Chemical modifications to DNA and histone proteins that affect gene expression without altering the underlying DNA sequence.

Environment

The surroundings or conditions in which a person, animal, or plant lives or operates, including both natural and human-made factors.

Natural Selection

The mechanism through which creatures that are more suited to their surroundings are more likely to live and have a greater number of descendants.