Question

scientists estimate that our bodies contain anywhere from 75 to 100 trillion cells, which come in hundreds of different types. cells do everything from providing energy to allowing animals to reproduce. the word \estimate\ in the sentence above tells the reader that _____. a a human body has many different types of cells b each type of cell lives for a different period of time c cells are so small and numerous that they would be impossible to count

Explanation:

The word "estimate" implies uncertainty due to the difficulty of an exact count. Cells are tiny and extremely numerous, making an exact count nearly impossible.

Answer:

C. cells are so small and numerous that they would be impossible to count