Which of the following is an example of aerobic respiration? (3 points) Lactic acid fermentation in human muscles Physical exchange of gases in human lungs Respiration during vigorous physical exercise Breaking,down of glucose with oxygen inside an animal cell

## Step 1<br />Aerobic respiration is a process that uses oxygen to break down glucose and produce ATP (adenosine triphosphate), which is the energy currency of the cell. This process is used by most organisms, including humans, to generate energy.<br /><br />## Step 2<br />Option A, "Lactic acid fermentation in human muscles", is not an example of aerobic respiration. This is an example of anaerobic respiration, which occurs in the absence of oxygen. During intense exercise, when oxygen levels are low, muscles may switch to lactic acid fermentation to produce ATP.<br /><br />## Step 3<br />Option B, "Physical exchange of gases in human lungs", is not a process of respiration but rather a part of the respiratory system's function. It involves the inhalation of oxygen and the exhalation of carbon dioxide, but it is not the process of breaking down glucose.<br /><br />## Step 4<br />Option C, "Respiration during vigorous physical exercise", is too vague. While aerobic respiration does occur during exercise, this option does not specify the process of breaking down glucose with oxygen.<br /><br />## Step 5<br />Option D, "Breaking down of glucose with oxygen inside an animal cell", is the correct answer. This option accurately describes the process of aerobic respiration, where glucose is broken down in the presence of oxygen to produce ATP.