Correct Answer: Hidden

Solution : The third option is the correct answer.

While "evident" suggests transparency and clarity, "hidden" implies obscurity or secrecy, indicating that the true nature or presence of something is not readily apparent or visible.

The meanings of the other options are as follows:

• Obvious refers to something that is easily seen or understood.
• Distinct indicates something that is clear, separate, or easily distinguishable from others.
• Apparent also conveys the idea of something being readily visible or understood.

Therefore, the correct answer is hidden .