__________ maps input key/value pairs to a set of intermediate key/value pairs.
(a) Mapper
(b) Reducer
(c) Both Mapper and Reducer
(d) None of the mentioned
(a) Mapper
(b) Reducer
(c) Both Mapper and Reducer
(d) None of the mentioned
Right option is (a) Mapper
The explanation is: Maps are the individual tasks that transform input records into intermediate records.