Correct Answer: Watch

Solution : The correct choice is the second option.

Observe means to notice or watch something carefully. Among the given options, watch is the closest in meaning. It implies paying attention to something.

The meanings of the other options are as follows:

• Ignore: This means to deliberately pay no attention to or disregard something or someone.
• Deserve: This means to earn or be worthy of something as a result of one's actions or qualities.
• Clarify: This means to make something clear or easier to understand, often by explaining it in more detail.