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Test: SAT Writing
Replace the underlined portion with the answer choice that results in a sentence that is clear, precise, and meets the requirements of standard written English.
| 1. | Since the advent of the original flu vaccine, they have discovered several additional drugs that, when administered by a health care professional, help to reduce the risk of influenza. |
they have discovered several additional drugs that, when administered by a health care professional, helps to reduce the risk of influenza.
they have discovered several additional drugs that, when administered by a health care professional, help to reduce the risk of influenza.
researchers have discovered several additional drugs that, when administered by a health care professional, helps in reducing the risk of influenza.
researchers have discovered several additional drugs that, when administered by a health care professional, help to reduce the risk of influenza.
researchers have discovered several additional drugs that, when administered by a health care professional, has helped to reduce the risk of influenza.
