Astronomy current events question: analyzing Titan's surface from Huygen's landing data

Astronomy 210L, fall semester 2012
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!)

Jia-Rui C. Cook and Markus Bauer, "Bounce, Skid, Wobble--How Huygens Landed on Titan," October 11, 2012
http://www.nasa.gov/mission_pages/cassini/whycassini/cassini20121011.html

Scientists analyzing __________ data from the European Space Agency's Huygens probe have been able to measure the composition and consistency of the surface of Saturn's moon, Titan.
(A) fine-spectrum radar.
(B) infrared photographic.
(C) landing bounces and wobbles.
(D) liquid ethane and methane rainfall.
(E) core sample.

Correct answer: (C)

Student responses
Sections 70178, 70186, 70200
(A) : 2 students
(B) : 9 students
(C) : 37 students
(D) : 2 students
(E) : 2 students