Astronomy current events question: dark matter bridge between galaxies

Astronomy 210L, spring semester 2017
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!)

Mike Hudson and Seth Epps, "Waterloo Researchers Capture First 'Image' of a Dark Matter Web that Connects Galaxies" (April 12, 2017)
ras.org.uk/news-and-press/2975-waterloo-researchers-capture-first-image-of-a-dark-matter-web-that-connects-galaxies

Researchers imaged a dark matter bridge connecting galaxies by using gravitational lensing, measuring how __________ by unseen concentrations of mass.
(A) light is warped.
(B) antimatter is annihilated.
(C) black holes are produced.
(D) nebulae are disrupted.
(E) supernovae are trigged.

Correct answer: (A)

Student responses
Sections 30679, 30680
(A) : 18 students
(B) : 4 students
(C) : 1 student
(D) : 4 students
(E) : 2 students