Correct Answer: Disclose

Solution : The correct choice is the fourth option.

Explanation : The hint here is to look for a word that has a similar meaning to reveal, which implies making something known or showing something that was previously hidden. Disclose fits this context perfectly, as it means to make information known or reveal something that was previously kept secret.

The meaning of the other options is as follows:

• Curb : This word means to restrain or control.
• Veil : This word means to cover or conceal.
• Darken : This word means to make something less bright or clear.

Therefore, the correct answer is disclose .