Astronomy current events question: VISTA's clear vista

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!)

Richard Hook, "VISTA Stares Right Through the Milky Way," (February 4, 2015)
http://www.eso.org/public/usa/news/eso1504/

Stars beyond our Milky Way galaxy's central bulge were imaged by the European Southern Observatory VISTA telescope using infrared light, which is unaffected by:
(A) the central supermassive black hole.
(B) solar winds.
(C) dark matter.
(D) look-back time.
(E) thick dust clouds.

Correct answer: (E)

Student responses
Sections 30678, 30679, 30680
(A) : 0 students
(B) : 1 student
(C) : 11 students
(D) : 2 students
(E) : 38 students