broall
When exercising the muscles in one’s back, it is important, in order to maintain a healthy back, to exercise the muscles on opposite sides of the spine equally. After all, balanced muscle development is needed to maintain a healthy back, since the muscles on opposite sides of the spine must pull equally in opposing directions to keep the back in proper alignment and protect the spine.
Which one of the following is an assumption required by the argument?
Argument - Conclusion: To maintain a healthy back --> important to exercise X muscles equally
By proper exercise --> muscles on the opposite side will be pulled equally in opposite direction --> balanced muscle development --> balanced development is required to maintain a healthy back.
(A) Muscles on opposite sides of the spine that are equally well developed will be enough to keep the back in proper alignment.
- The argument states that muscles are one of the most important (necessary) NOT the only parameter required (Sufficient). Hence this is an extreme option
- Wrong
(B) Exercising the muscles on opposite sides of the spine unequally tends to lead to unbalanced muscle development.
- To maintain a healthy back --> balanced development necessary.
- Negate choice: Exercising X muscles does not tend to lead to unbalanced muscle development. Means even if same side muscles are exercised there wont be unbalanced development --> = there will be balanced development --> back will be maintained = contradicts the argument
- Correct
(C) Provided that one exercises the muscles on opposite sides of the spine equally, one will have a generally healthy back.
- The argument is similar to the option A
- Provided that = Exercising the muscles on opposite sides is the only required parameter to maintain a healthy back. = Not necessary. May be the person has a dislocated back because of some congenital condition
- Wrong
(D) If the muscles on opposite sides of the spine are exercised unequally, one’s back will be irreparably damaged.
- The culprit is "irreparably damaged". The argument says that there wont be a balanced development --> spine cannot be maintained. But may be through some surgery we can align the back. So to say "irreparably" is incorrect.
- Wrong
(E) One should exercise daily to ensure that the muscles on opposite sides of the spine keep the back in proper alignment.
- This is an out of context argument.
Dear
daagh nightblade354 GMATNinjaTwo If we modify the option D - If the muscles on opposite sides of the spine are exercised unequally, one’s back will be damaged
Can this be a better option than B as this option considers a direct effect on the final condition required to be attained than the effect proposed by option B?
Or will the two options be two close to arrive at a final answer?