Harry was a pre-term newborn who was born after 26 weeks of pre-natal development. he now is a healthy, happy 2-year-old. harry's ability to survive after being born so early was due in part to his reaching the: ) term of post-natal development.
b) germinal period.
c) neurogenesis point.
d) age of viability.

d) age of viability

Explanation:

Age of viability is the duration to which  a premature child can survive after coming out of uterus. This period of time usually occurs in 22 weeks to 26 weeks.

According to the question, Harry is a healthy baby even after pr-mature delivery after 26 weeks because survival probability increases from 26 weeks to 28 weeks as chances of surviving become almost 80% to 90%

Other options are incorrect because post-natal development is the development of child after birth. Germinal period is the duration after conception. Neurogenesis point is the node of neurons working.Thus, the correct option is option (d)

it is due to the halo effect as the impression of the boy created earlier.on the mind of the principle affected his decision