instruction:
In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
question:
Presta valves are the skinnier of the _ valve types.
answer:
two


question:
Cichlids are popular in the aquarium hobby for a _ reason.
answer:
four


question:
Synchronized stimuli overloads _ of the five senses at the same time.
answer:

four