Astronomy current events question: Moon south pole frozen water

Astronomy 210L, Fall Semester 2010
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!)

University of Arizona-Tucson press release, Astronomy.com editors, "It's Cold and Wet at the Moon's South Pole?," October 22, 2010
http://www.astronomy.com/en/News-Observing/News/2010/10/It%20is%20cold%20and%20wet%20at%20the%20Moons%20south%20pole.aspx

By collecting neutrons from the moon's surface, the NASA Lunar Reconnaissance Orbiter observed evidence of:
(A) solar flare damage.
(B) helium-3 and other potential fusion fuels.
(C) moonquakes.
(D) radioactivity.
(E) frozen water.

Correct answer: (E)

Student responses
Sections 70178, 70186, 70200
(A) : 1 student
(B) : 5 students
(C) : 1 student
(D) : 1 student
(E) : 52 students