Question

There are hair cells in the inner ear that are involved in your ability to hear. Excessively loud noise can kill these cells, and the longer you’re exposed to the loud noise, the greater the number of cells that are destroyed. The greater the number of cells that are destroyed, the worse your hearing gets. Once those hair cells have died, they stay dead; so your hearing isn’t likely to get better in the future.

What is the topic sentence of this paragraph?


Once those hair cells have died, they stay dead; so your hearing isn’t likely to get better in the future.


There are hair cells in the inner ear that are involved in your ability to hear.


Excessively loud noise can kill these cells, and the longer you’re exposed to the loud noise, the greater the number of cells that are destroyed.


The greater the number of cells that are destroyed, the worse your hearing gets.

Answer 1

The topic sentence of this paragraph is:

B. There are hair cells in the inner ear that are involved in your ability to hear.

Step-by-step explanation:

The topic sentence informs readers on what the paragraph is about, what they can expect to read in it. In a sense, it serves as a map, letting readers know where the author is going. In this case, the topic sentence "There are hair cells in the inner ear that are involved in your ability to hear" lets readers know this paragraph will talk about those hair cells and their importance for our hearing. And that is exactly what happens. The author explains, for instance, that those cells can die and, once they do, our hearing gets worse.