Astronomy current events question: Very Large Telescope laser guide star

Astronomy 210L, spring semester 2015
Cuesta College, San Luis Obispo, CA

Students are assigned to read online articles on current astronomy events, and take a short current events quiz during the first 10 minutes of lab. (This motivates students to show up promptly to lab, as the time cut-off for the quiz is strictly enforced!)
Domenico Bonaccini Calia, Wolfgang Hackenberg, and Richard Hook, "First Light of New Laser at Paranal" (May 8, 2015)
The European Southern Observatory's Very Large Telescope in Chile uses a laser while observing to:
(A) evaporate high-altitude clouds.
(B) subtract out light pollution.
(C) dust off its mirrors.
(D) measure atmospheric turbulence.
(E) determine target distances.

Correct answer: (D)

Student responses
Section 30680
(A) : 1 student
(B) : 0 students
(C) : 2 students
(D) : 11 students
(E) : 2 students

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