Select the most appropriate option to substitute the underlined segment in the given sentence. If there is no need to substitute it, select 'No substitution'.

She lived in well-resourced surroundings.

No substitute 

The most appropriate option to substitute the underlined segment in the given sentence "She lived in well-resourced surroundings" is:

"No substitute."

Explanation:

The sentence "She lived in well-resourced surroundings" is already correct and does not require any substitution. The phrase "well-resourced surroundings" accurately conveys the meaning that the person lived in an environment that had ample resources or was well-equipped. The word "surroundings" refers to the immediate environment or area in which someone lives. Therefore, there is no need to substitute the underlined segment in the sentence.