B1
the best, biggest, longest, tallest, etc.
Dictionary examples:
Our class broke the school record for most excuses for not doing homework. (0.0)
Our teacher holds the school record for most cups of coffee in one day. (0.0)
The office has a new record: most paper jams in one printer. (0.0)
He holds the world record for 100 meters. (18.8)
He ran the 100 meters in 9.79 seconds and broke the world record. (22.6)
She set a new record for the high jump. (24.9)