I believe this may be incision. Sorry if it wasn’t
Answer:
Iris
Explanation:
The iris opens and closes to control the amount of light entering through the pupil (schepens.harvard.edu).
Answer:
<em>B. Use an implied main data. </em>
Explanation:
A supporting sentence is meant to validate a main statement of dialogue. It can be an example to show that the main statement is a valid one. It can be a fact or it can be a statistic to validate the real time application of the real statement.
But it cannot be an implied main data as another main data would need another supporting statement altogether for its own validation.
The correct answer is lead toxicity, hope it helps