Astronomy current events question: Ceres cryovolcano Ahuna Mons

Astronomy 210L, fall 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!)

Bill Steigerwald, "NASA Discovers 'Lonely Mountain' on Ceres Likely a Salty-Mud Cryovolcano" (September 1, 2016)
nasa.gov/feature/goddard/2016/ceres-cryo-volcano

On the dwarf planet Ceres, Ahuna Mons may be a cryovolcano that releases frigid salty/muddy water, based on:
(A) seismic data.
(B) footage of an eruption.
(C) similar geological features on Earth.
(D) samples scraped from its crust.
(E) magnetic field disruptions.

Correct answer: (C)

Student responses
Sections 70178, 70186
(A) : 11 students
(B) : 0 students
(C) : 13 students
(D) : 2 students
(E) : 3 students