Before conducting a sobriety test, which question asks if the subject is willing to comply with a series of field sobriety tests?

• A. Are you willing to comply with a series of field sobriety tests?
• B. Do you understand the test is voluntary?
• C. Are you currently under investigation?
• D. Will you refuse to participate?

Answer: (A)

Assessing voluntariness before field sobriety tests is essential. The best choice directly asks if the subject is willing to comply with a series of field sobriety tests, which clearly seeks voluntary participation. This confirms consent and helps guard against claims of coercion while establishing that the person chooses to proceed with the testing.

Other options address related ideas but miss the key point. Asking if the person understands the test is voluntary focuses on awareness, not willingness to participate. Asking if the person is currently under investigation has nothing to do with consent to test. Asking if the person will refuse to participate shifts the focus to a refusal rather than confirming voluntary participation.