Select the most appropriate option to fill in the blank.

Fasting ______ some festivals increases the consumption of fruits.

during

The most appropriate option to fill in the blank is during.

The sentence is about how fasting during some festivals increases the consumption of fruits. The word "during" means "in the course of." This is the most appropriate word because it accurately describes how fasting happens during some festivals, and it is during this time that the consumption of fruits increases.

The other options are not as appropriate.

• While means "at the same time as." This does not make sense in the context of the sentence, because fasting and the consumption of fruits are not happening at the same time.
• When means "at the time that." This does not make sense in the context of the sentence, because fasting is not happening at a specific time, it is happening during some festivals.
• About means "approximately." This does not make sense in the context of the sentence, because fasting is not happening approximately during some festivals, it is happening during specific festivals.