Interactions between the environment and heredity can result in differences in personality. Which of the following infants has genetically influenced traits (heredity) that might evoke responses in their caregivers (environment), which ultimately can influence personality characteristics?a. All of these infant traits can influence their care-giving environment and personality development.
b. an easygoing, emotionally stable infant
c. an anxious, inhibited infant
d. an emotionally reactive infant

All of these infant traits can influence their care-giving environment and personality development.

Explanation:

Genotype is the genetic constituent of the individual  whereas the phenotype is the physical constitution or physical appearance of the individual.  The genetics studies these inheritance patterns of the phenotype and genotype.

Some traits are completely determined by the genotype of the individual. But some traits are also influenced by the environmental factors as well. The phenotype of the individual in this case depends on both the genotype as well as on the environmental factors that can influence the personality development as well.

Thus, the correct answer is option (a).