The correct answer is (B) To offer in sacrifice; to kill in sacrifice by fire; to kill as a sacrificial victim, as by fire.

Immolate comes from Latin immolare (originally, to sprinkle with sacrificial meal).

Examples of use:

• The Buddhist priest immolated himself in the street to protest the policies of the government..
• Their custom was to immolate a goat on the altar to appease their god.