Correct Response: A. Regular aerobic physical activity helps lower the levels of low-density lipoproteins (LDLs), the "bad cholesterol," and increase the levels of high-density lipoproteins (HDLs), the "good cholesterol." HDLs help the body to move fatty deposits to the liver for disposal. Aerobic activity may increase muscle size if load is increased, but not the number of skeletal muscles, which do not change (B), nor the length of bones and tendons (D), which are determined primarily by human biology. Bone length can also be influenced by nutrition. Mineral deposition to bone (C), such as calcium absorption, is a result of bone growth processes and nutrition.
