Answer:
A
Explanation: Context clues:
Sadly, he will always be remembered for his infamous remarks at the Oscars.
It couldn't be C or D because those both seem like positive acts.
C: She is infamous for having memorized pi to the 10,000th digit. Nothing negative, it's a celebrated achievement.
D: Touring the movie set, I got to meet the infamous people who work behind the scenes; nothing negative.
B was a bit confusing because you couldn't exactly tell whether the city was infamous or the food, but I've concluded the city was infamous, so that wouldn't be negative.
B: The city has been rebuilt since the flood and is now infamous. The city isn't infamous because of the flood. (Questionable)