Select the most appropriate option to substitute the highlighted segment in the given sentence. If there is no need to substitute it, select ‘No substitution’.
They decided to move to Dehradun because they could live in a peaceful environment.

Correct option is D

The correct substitution of the highlighted segment is (d) so that.
Explanation:
· The conjunction “because” indicates a reason that already existed.
· However, in this context, the purpose of moving is to live in peace. Hence, “so that” (used to express purpose or intended result) is more suitable.
Correct sentence: They decided to move to Dehradun so that they could live in a peaceful environment.
Grammatical rule used:
· Use “so that” to indicate purpose or intention.
· Use “because” to indicate cause or reason.
Example:
He left early so that he could catch the bus.