Correct Answer: limited

Solution : The first option is the correct answer.

The term infinite denotes something without limits or bounds, extending endlessly. Its opposite, limited, implies a restriction or constraint within certain boundaries.

The meanings of the other options are as follows:

• Vast means extremely large or extensive.
• Eternal means existing without a beginning or end.
• Boundless means without boundaries or limits.

Therefore, the correct answer is limited.