Astronomy current events question: ultraviolet radiation of early planetary atmospheres

Astronomy 210L, spring semester 2019
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!)

Linda B. Glaser, "Study: Nearest Exoplanets Could Host Life" (April 9, 2019)
news.cornell.edu/stories/2019/04/study-nearest-exoplanets-could-host-life

Models of Earth's early atmosphere and exoplanet atmospheres indicate that life may survive exposure to:
(A) ozone.
(B) solar flares.  
(C) cosmic rays.  
(D) ultraviolet light.
(E) supernova explosions.

Correct answer: (D)

Student responses
Sections 30679, 30680
(A) : 2 students
(B) : 11 students
(C) : 6 students
(D) : 22 students
(E) : 1 student