Astronomy current events question: large terrestrial exoplanet Wolf 503b

Astronomy 210L, fall semester 2018
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!)

Marie-Ève Naud and Julie Gazaille, "A New Exoplanet is Discovered by an International Team Led by a Young Master's Student" (September 6, 2018)
nouvelles.umontreal.ca/en/article/2018/09/06/a-new-exoplanet-is-discovered-by-an-international-team-led-by-a-young-master-s-student/

Wolf 503b, an exoplanet twice the size of Earth was discovered by analyzing Kepler Space Telescope data of how it blocked __________ from its star.
(A) light.
(B) solar flares.
(C) magnetic fields.
(D) gravitational waves.
(E) cosmic background radiation.

Correct answer: (A)

Student responses
Sections 70178, 70186
(A) : 18 students
(B) : 1 student
(C) : 4 students
(D) : 2 students
(E) : 2 students