Some people eat salmon, sardines, ground flax seeds, and fish oil caps

Answer D.
There are a couple of ways to solve this:

- a precise solution is just looking at what the argument implies: if the foods mention "contain significant amounts of omega-3 fatty acids", which "are known to help prevent blood clots", it follows that - at the very least - some of those taking Omega 3 will have less of a chance to get blood clots. This is what D tells us.
The key is not assuming anything stronger than what we are told, but the very minimum of what can we know.

Solving by process of elimination:

A. People who eat salmon or sardines everyday will completely prevent any blood clots. - this is not impossible, but is far too strong given the information - if Omega 3 "helps prevent" this does not mean it always prevents
B People who do not eat ground flax seeds on a regular basis are in danger of developing blood clots after the age of fifty-five. - this is not stated, nor can it be implied: it stands to reason that the opposite is true, and only those who do eat flax seeds are those who are in danger in the first place
C. A diet that includes salmon, sardines, ground flax seeds, and fish oil capsules is the most effective way to prevent blood clots. - we don't know this. All we have been told is that it is one way to prevent it - no comparison to other techniques
D. Some people with a diet consisting of salmon, sardines, ground flax seeds, and fish oil capsules will reduce their risk of blood clots. - this follows logically - if Omega 3 helps prevent, [b]at least some of the people should have less of a chance[/b]
E. Only eating foods rich in omega-3 fatty acids is necessary to maintain a healthy lifestyle. - definitely not stated or implied -
we know it helps, but nothing tells us it is enough

The question asks for something that can be "correctly inferred," making this an Inference question. Look for ways to combine statements to make logical deductions.

According to the stimulus, some people eat foods that contain significant amounts of omega-3 fatty acids, which are known to help prevent blood clots.

Combining these two statements, it can be deduced that some people are lowering their chances of developing blood clots.

(D) combines the given statements and is correct. Since these foods are known to help prevent blood clots, it can be inferred that some people will lower their risk of blood clots by eating these foods.

(A) is extreme because it claims complete prevention of blood clots. The stimulus says only that omega-3 fatty acids help prevent blood clots.

(B) is not a valid inference. Flax seeds are just one source of omega-3 fatty acids. Even without those seeds, there are plenty of other foods that can help prevent blood clots (e.g., salmon and sardines).

(C) is extreme. The foods listed are said to help, but the author never says they are the most effective. There is no information about other foods, any of which could be more effective.

(E) is extreme. The argument only addresses preventing blood clots, not leading an overall healthy lifestyle. Furthermore, even with regard to preventing blood clots, the stimulus just says foods with omega-3 fatty acids help, not that they are the only thing necessary.

Most of the OPtions (As marked in red) uses extreme words and doesn't follow from the Stimulus, except option (D) in the highlighted part of the stimulus, thus, the correct Answer must be (D)

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