We have approximately this many cells in our bodies." 10 million C 1 trillion 10 trillion

## Step 1<br />The human body is composed of a vast number of cells. These cells are the basic building blocks of life and are responsible for all the functions of the body.<br />## Step 2<br />The number of cells in the human body is not a fixed number, but it is estimated to be around 37.2 trillion. This number can vary slightly depending on the individual and the method used to estimate it.<br />## Step 3<br />Given the options, the closest approximation to the actual number of cells in the human body is 10 trillion.