Astronomy current events question: Very Large Telescope adaptive optics

Astronomy 210L, fall semester 2018
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!)

Joël Vernet, Roland Bacon, and Calum Turner, "Supersharp Images from New VLT Adaptive Optics" (July 18, 2018)
eso.org/public/news/eso1824/

Recent images of Neptune from the European Southern Observatory's Very Large Telescope used adaptive optics to compensate for:
(A) atmospheric turbulence.
(B) local earthquakes.
(C) interstellar dust and gas.
(D) Earth's rotation.
(E) light pollution.

Correct answer: (A)

Student responses
Sections 70178, 70186
(A) : 8 students
(B) : 1 student
(C) : 8 students
(D) : 1 student
(E) : 11 students