Astronomy current events question: waves on Titan's shores?

Astronomy 210L, spring semester 2016
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!)
News release, "Mystery Feature Evolves in Titan's Ligeia Mare" (March 2, 2016)
Analysis of NASA's Cassini spacecraft images of the changing hydrocarbon sea coast on Saturn's moon, Titan, indicate that it may be caused by:
(A) waves.
(B) volcanic eruptions.
(C) tectonic plate motion.
(D) moonquakes.
(E) water icebergs.

Correct answer: (A)

Student responses
Sections 30678, 30679
(A) : 15 students
(B) : 1 student
(C) : 5 students
(D) : 1 student
(E) : 1 student

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