How will the right answer fit in terms of support and conclusion?

Only the right answer will be a conclusion supported by the passge.

Highlight the main conclusion in the passage, if there is one:

There is no conclusion in the passage, just a long explanation of some research and its results. The conclusion will be in the right answer.

[BACKGROUND]. [BACKGROUND]. [BACKGROUND]. [BACKGROUND]. The study found that [SUPPORT].

Map the wording of the answers to the wording of the passage:

(A) Many of the claims made on behalf of hypnosis…

…aren’t part of the study in the passage. Other claims are mentioned in the opening sentence, but the study is only about “power of recall”. You can’t make a conclusion about any other “claims made on behalf of hypnosis”.

(B) Hypnosis cannot significantly increase a person’s power of recall.

That’s a pretty strong, matter-of-fact statement. That’s not how valid conclusions usually sound. You can’t make a conclusion this strong based only on the one study in the passage. You know “cannot” means that it’s absolutely impossible, no matter what, under any circumstances.

(C) …inevitably results in false memories.

That’s also way too strong. We know “false memories” are possible, but “inevitably” means they happen no matter what, without any exceptions. The passage doesn’t support that extreme a conclusion.

(D) …depends to at least some extent on suggestion.

This all maps, and notice how it uses really weak wording. The study supports this for sure, since “suggestion” maps to the people in the study getting asked to remember a film, “despite their not having just seen a film.”

(E) Visual memory is enhanced more by hypnosis than is auditory memory.

The author doesn’t actually make this comparison, which is way too broad for support that’s only about one experiment.

(D) is the correct answer.