The correct answer is (C) To set apart; to isolate; remove, separate, shut away, or seclude; to withdraw into solitude or retirement. Also, to seize, confiscate, or appropriate property by legal or public authority

Sequester comes from Latin sequestrare (to remove, separate, place in safekeeping).

Examples of use:

• The hermit sequestered himself from the outside world.
• The jury was sequestered in a nearby hotel.