Astronomy current events question: Kappa Ceti's stellar winds

Astronomy 210L, spring semester 2016
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!)

Christine Pulliam, "Young Sun-like Star Shows a Magnetic Field Was Critical for Life on the Early Earth" (March 16, 2016)
cfa.harvard.edu/news/2016-06

Early life on Earth may have been protected by its magnetic field, based on observations of the young sun-like star Kappa Ceti's:
(A) stellar winds.
(B) radioactivity.
(C) chromosphere.
(D) super Jupiters.
(E) gamma rays.

Correct answer: (A)

Student responses
Sections 30678, 30679, 30680
(A) : 21 students
(B) : 5 students
(C) : 9 students
(D) : 0 students
(E) : 5 students