Answer:
Option (a).
Explanation:
The trait of an organism can be influenced by the hereditary factors as well as the environmental factors. The environment may affect the expression of the particular hereditary trait.
The generation of response against the specific individual and its behavior is influenced by the environmental factors. The care giving environment can change the influence of an infants and may change the personality development. The environment factor play major role than the hereditary factor in this infants case.
Thus, the correct answer is option (a).