Correct Answer: subject

Solution : The third option is the correct choice.

In this context, the word subject refers to the topic or matter being discussed or considered. If the person's face revealed signs of being disturbed, the speaker decided to drop or avoid discussing that particular subject to prevent further discomfort.

The meanings of the other options are as follows:

• A product is an item that is produced or manufactured.
• A chance is an opportunity or possibility.
• Pride is a feeling of deep pleasure or satisfaction derived from one's achievements.

Therefore, the correct sentence should be: "I looked at her face and found she was getting disturbed. I decided to drop that subject ."