Astronomy current events question: mud volcanoes on Mars

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!)

Anuradha K. Herath, "Mud Volcanoes on Mars," August 19, 2010
http://www.astrobio.net/exclusive/3586/mud-volcanoes-on-mars

According to NASA researchers, __________ may be evidence of mud volcanoes on Mars.
(A) underground seismic activity.
(B) lack of above ground water.
(C) images taken by the Mars Reconnaissance Orbiter.
(D) samples drilled by the Mars Exploration Rover Opportunity.
(E) Mars Exploration Rover Spirit sinking into mud.

Correct answer: (C)

Student responses
Sections 70178, 70186, 70200
(A) : 16 students
(B) : 0 students
(C) : 46 students
(D) : 5 students
(E) : 2 students