Correct Answer: Sad

Solution : The correct choice is the third option .

Explanation:
Glad means feeling pleasure or happiness. Therefore, the opposite of feeling happy or pleased is feeling sad , which means experiencing sorrow or unhappiness.

The meanings of the other words are:

• Keen : Having a sharp edge; intellectually sharp; highly enthusiastic.
• Loyal : Faithful to a cause, country, group, or person.
• Pleased : Feeling or showing happiness or satisfaction.

Therefore, the right answer is sad .