Astronomy current events question: Jupiter "hot spots"

Astronomy 210L, spring semester 2013
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 Cook and Elizabeth Zubritsky, "'Hot Spots' Ride a Merry-Go-Round on Jupiter," March 14, 2013
http://www.nasa.gov/mission_pages/cassini/whycassini/cassini20130314.html

Images from NASA's Cassini spacecraft provides evidence that Jupiter's "hot spots" are created by conditions similar to Earth's:
(A) mantle circulation.
(B) atmosphere and oceans.
(C) gravitational fluctuations.
(D) shield volcanoes.
(E) northern lights.

Correct answer: (B)

Student responses
Sections 30678, 30679, 30680
(A) : 5 students
(B) : 28 students
(C) : 12 students
(D) : 2 students
(E) : 3 students