Astronomy current events question: habitable zone exoplanet TOI 700 d

Astronomy 210L, spring semester 2020
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!)

Jeanette Kazmierczak, "NASA Planet Hunter Finds its First Earth-Size Habitable-Zone World" (January 6, 2020)
nasa.gov/feature/goddard/2020/nasa-planet-hunter-finds-its-1st-earth-size-habitable-zone-world

NASA's Transiting Exoplanet Survey Satellite (TESS) discovered an Earth-size exoplanet in a star's habitable zone, where this exoplanet may have _________ on its surface: (A) liquid water. (B) microbial mats. (C) active volcanoes. (D) phosphate-rich soils. (E) carbon-rich deposits.

Correct answer: (A)

Student responses
Sections 30679, 30680
(A) : 31 students
(B) : 4 students
(C) : 2 students
(D) : 4 students
(E) : 2 students