<h2>C. Because I did this before.</h2>
The theorist who conducted an experiment in which a rat was conditioned to press a bar in order to receive a reward, illustrating how nurture influences behavior include option D: "B. F. Skinner."
<h3>Who is B.F. Skinner?</h3>
Burrhus Frederic Skinner was an famous American psychologist and writer. He also known as the best professor of Harvard University from 1958 to 1974.
Skinner describe this experiment in a operant conditioning. Through this experiment, Skinner wants to know about the behavior of particular rat when the hungry rat put into the box and the rat try to moved out from the box along with by mistake knock the lever.
Therefore, correct option is D.
Learn more about B.F. Skinner, refer to the link:
brainly.com/question/8156147
I believe that a ten-year-old would be a better eyewitness because generally kids are more attentive than adults when they see something they are interested in. A child is more likely to remember important details and then recall them from memory than an adult, whose mind is slowly deteriorating and he may forget relevant details.