Concept:The word "stellar" means outstanding, excellent, or exceptional.
So the most nearly opposite word should mean ordinary, common, or unexceptional.
Explanation:A "stellar performance" refers to a performance that is very impressive and of high quality.
For a sharp contrast, the amateur group's showing must be dull, ordinary, or lacking distinction.
The word "mundane" exactly carries this meaning: ordinary, everyday, or uninteresting.
"Awkward" means clumsy or uncomfortable, "woeful" means very bad, and "routine" means regular or habitual.
Among the options, "mundane" is the closest opposite in meaning to "stellar."
Answer:B. mundane