•I was thrilled that my cousin was coming to stay with us. (B. joyous)
Definition: joyous is an adjective which describes the state of great happiness.
•My heart broke when I saw the children in the hospital. (D. empathetic)
Definition: empathy is a psychological identification, ability to share and understand the feelings of others.
•You're so silly, you can't wear pajamas to school. (C. Playful)
Definition: playful expression is expressed with the intent of amusement in contrary to express seriously.
•She has no talent; she's a fool if she thinks she'll be cast in the play. (A. cruel)
Definition: cruel is an expression of being unkind or cold hearted towards other’s pain or suffering.
It is d I have done this before
The correct option for the blank is "Genetic influences". Genetic influences affect the personality to the maximum.
<h3>What are Genetic influences?</h3>
Genetic influences refer to the hereditary characteristics of a person that are due to the genes of his parents or forefathers. Genes influence the person, his health, and his mental abilities.
Nearly two-thirds of the personality is therefore attributed to genetic influences.
Therefore the correct option is C.
Learn more about genetic influences here:
brainly.com/question/1251774