Answer :
The answer is D. Because it states in the passage how their parents were born, their parents were born there so it shows ancestral roots.
Answer:
D) These lines suggest that national identity is forged through having deep ancestral roots in a place.
Explanation:
The speaker makes his case about national identity by mentoning how multiple generations are born and raised in a common place. This is how ancestral roots are established as time moves forward, and it is also how the speaker believes that national identity is formed.