Astronomy current events question: "downtown" Milky Way

Astronomy 210L, Spring Semester 2011
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!)

Astronomy.com editors, "Stars Gather in 'Downtown' Milky Way," March 22, 2011
http://astronomy.com/en/News-Observing/News/2011/03/Stars%20gather%20in%20downtown%20Milky%20Way.aspx

The NASA Spitzer Space Telescope was able to image stars near the center of the Milky Way by:
(A) masking out the central supermassive black hole.
(B) observing infrared light.
(C) orbiting from above the galactic plane.
(D) using adaptive optics.
(E) upgrading its imaging software.

Correct answer: (B)

Student responses
Sections 30678, 30679, 30680
(A) : 1 student
(B) : 12 students
(C) : 5 students
(D) : 7 students
(E) : 1 student