Astronomy current events question: protocluster candidate z66OD

Astronomy 210L, fall 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!)

News release, "Oldest Galaxy Protocluster Forms 'Queen's Court'" (September 27, 2019)
nao.ac.jp/en/news/science/2019/20190927-subaru.html

Using the Subaru, Keck, and Gemini telescopes on Mauna Kea, HI, researchers determined that the protocluster candidate z66OD contains:
(A) intergalactic filaments.
(B) rapid fast radio bursts.
(C) earth-like protoplanets.
(D) the oldest known galaxies.
(E) both matter and antimatter.

Correct answer: (D)

Student responses
Sections 70178, 70186
(A) : 0 students
(B) : 2 students
(C) : 13 students
(D) : 17 students
(E) : 2 students