Correct Answer: habituated

Solution : The correct choice is the fourth option .

Accustomed means being used to something through experience or habit. Habituated similarly means becoming accustomed to or used to something. Both of the words convey the sense of being familiar with something through regular exposure or practice.

The meanings of the other options are as follows:

• Delegated : This means to entrust a task or responsibility to another person.
• Disturbed : This means to interfere with the normal arrangement or functioning of something; also, to be agitated or uneasy.
• Expelled : This means to be forced to leave a place or an organisation.