Astronomy current events question: ALMA direct imaging of the sun

Astronomy 210L, spring semester 2017
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!)

Michael Franco, "ALMA Looks Straight into the Sun" (January 17, 2017)
newatlas.com/alma-telescope-images-sun-eso/47424/

The Atacama Large Millimeter/submillimeter Array in Chile directly images the sun's chromosphere by combining radio signals from:
(A) unwanted static.
(B) many different receivers.
(C) underground neutrino detectors.
(D) the full moon's reflected light.
(E) cloudy days.

Correct answer: (B)

Student responses
Sections 30679, 30680
(A) : 1 student
(B) : 18 students
(C) : 7 students
(D) : 5 students
(E) : 0 students