Increase in the level of high-density lipoprotein (HDL) in the human b...
If increased HDL levels cause reduced cholesterol levels and if a certain program increases HDL levels in some individuals, it follows that some individuals who undertake that program achieve reduced cholesterol levels. D is thus correctly inferable and the best answer. A cannot be correctly inferred because the statements do not establish any connection between being underweight and levels of cholesterol. Neither of B and E is inferable, since there is no indication that exercise alone is either necessary or sufficient to increase HDL levels or to decrease cholesterol levels. C is inappropriate because other methods of cholesterol reduction are not addressed.
View all questions of this test
Increase in the level of high-density lipoprotein (HDL) in the human b...
Inference: Regular exercise and weight reduction can lower cholesterol levels in the bloodstream of some individuals.
Explanation:
- High levels of cholesterol in the bloodstream can be lowered by increasing the level of HDL in the human bloodstream.
- Regular exercise and weight reduction can significantly increase the level of HDL in the bloodstream of some individuals.
- Therefore, a program of regular exercise and weight reduction can lower cholesterol levels in the bloodstream of some individuals.
Option A: This cannot be inferred from the given statements. The statements talk about the effectiveness of regular exercise and weight reduction in lowering cholesterol levels, not about the risk of developing high levels of cholesterol for underweight individuals.
Option B: This cannot be inferred from the given statements. The statements talk about the effectiveness of regular exercise and weight reduction in lowering cholesterol levels, not about the risk of developing high levels of cholesterol for individuals who do not exercise regularly.
Option C: This cannot be inferred from the given statements. Although regular exercise and weight reduction are effective in increasing HDL levels and lowering cholesterol levels, the statements do not suggest that they are the most effective methods.
Option D: This can be correctly inferred from the given statements. The statements clearly suggest that regular exercise and weight reduction can lower cholesterol levels in the bloodstream of some individuals.
Option E: This cannot be inferred from the given statements. The statements suggest that regular exercise and weight reduction can increase HDL levels and lower cholesterol levels, but they do not suggest that regular exercise alone is sufficient for individuals of average weight to decrease cholesterol levels.