Astronomy current events question: Titan's south pole cloud

Astronomy 210L, fall semester 2014
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!)

Preston Dyches, "Swirling Cloud at Titan's Pole is Cold and Toxic," (October 1, 2014)
http://www.nasa.gov/jpl/cassini/swirling-cloud-at-titans-pole-is-cold-and-toxic/index.html

NASA's Cassini mission observations of __________ revealed the temperature and chemical composition of the south pole cloud of Saturn's largest moon, Titan.
(A) a comet impact.
(B) radio interference.
(C) reflected sunlight.
(D) auroral lights.
(E) lightning storms.

Correct answer: (C)

Student responses
Sections 70178, 70186
(A) : 1 student
(B) : 5 students
(C) : 16 students
(D) : 6 students
(E) : 11 students