In this task, you need to write a topic word from the given fact. The topic word must have at least one word overlap with the given fact. The topic word often involves adding a new word from a related concept. In your topic word, use at least one word from the given fact. Topic words with two or more words work best.

Fact: if an object reflects light toward the eye then that object can be seen.
light beams.

Fact: a thermal insulator slows the transfer of heat.
heat transfer causes.

Fact: zinc has a positive impact on the healing of wounds.

healing wounds.