A

A In the case of trial observers, it is the level of improvement among volunteers in standard tests. A tight race is one where the participants finish very clos

B (Potter discovered, however, that geographic location alone could determine the outcome.)

YES (PARAGRAPH 3)

G (True, many test subjects treated with the medication felt their hopelessness and anxiety lift.)

NO (THE LAST PARAGRAPH)

C ( ... Potter combed through his company's database of published and unpublished trials -- including those that had been kept secret because of high placebo r

YES (UNSURPRISINGLY - PARAGRAPH 10)

H

E (Ultimately, Merck's venture into the antidepressant market failed. In the jargon of the industry, the trials crossed the "futility boundary".)

A (And the benefits of their "bogus" treatment persisted for weeks afterward, contrary to the belief-widespread in the pharmaceutical industry-that the placebo

NOT GIVEN

C (The drug tested extremely well early on... )