Astronomy current events question: intermediate mass black hole near Milky Way center

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!)

News release, "Hiding Black Hole Found" (February 28, 2019)
nao.ac.jp/en/news/science/2019/20190228-nro.html

High-resolution observations of __________ revealed the presence of an intermediate mass black hole near the Milky Way's central supermassive black hole.
(A) lookback time.
(B) neutrino emissions.
(C) gravitational lensing.
(D) dark matter filaments.
(E) an interstellar gas cloud.

Correct answer: (E)

Student responses
Sections 30679, 30680
(A) : 0 students
(B) : 0 students
(C) : 3 students
(D) : 6 students
(E) : 30 students