What obstacles did jen bricker face early in life?

Jen Bricker was born in 1987. When she was a baby her parents put her up for adoption.

The main obstacle she has to face very early in life was that she was born without her legs because of a genetic deformity.

However, she managed to have a relatively normal childhood. Now, she is a very famous aerial and acrobat and dedicated her life to gymnastics.

a is the answer because it just is

answer; researchers typically cannot control people's sexual behaviors as would be necessary in an experiment;