In the question below, a blank has been given. Following the sentence, five options have been given. Find out which of the following options will fit in the sentence.

We need to seal off the chemical container before the fumes ______________ to pervade the entire building.

Correct option is D

The correct choice is option(d) ‘begin’ to form a correct sentence. The word "begin" fits the context of the sentence. It implies that the sealing of the chemical container needs to be done before the fumes start spreading or pervading throughout the building.
terminate– to (cause something) to end or stop
cease– to stop something
expire – something to end after a specific period of time
begin– to start to happen or exist
quit – to leave a job or an activity