Correct Answer: dead

Solution : The correct choice is the third option.

Explanation: "Alive" refers to the state of being living, having life, or exhibiting vital signs. Its antonym, "dead" represents the complete absence of life or vital functions.

The meanings of the other options are as follows:

• Active means engaged in action or activity.
• Living means having life or being alive.
• Life is the existence of an individual or organism.

Therefore, the correct answer is dead.