9.
The answer is: C
Explanation
The correct option is C: Conspicuous.
The word "unobtrusive" means not attracting attention or being discreet. The antonym of "unobtrusive" would be a word that means attracting attention or being easily noticeable. "Conspicuous" fits this description, as it means easily seen or noticeable, often attracting attention.
The other options do not fit the meaning of an antonym for "unobtrusive":
"Propitiate" means to appease or pacify.
"Erroneous" means incorrect or wrong.
"Capitulate" means to surrender or give in.