An extragalactic source with a compact size and strong,broad emission lines is also likely to have:
A) variable emission.
B) low redshift.
C) strong radio absorption.
D) a stellar spectrum.

Question

Quizplus · Accepted Answer

The presence of strong, broad emission lines suggests that the source is actively accreting matter onto a central supermassive black hole, leading to variability in its emission. Compactness alone does not necessarily imply a low or high redshift, and there is no indication of radio absorption or a stellar spectrum.

An Extragalactic Source with a Compact Size and Strong,broad Emission