Measures intended to improve output would increase production. “Increase the level” is the appropriate combination of meaning and grammar. Decrease contradicts the stated purpose, speed does not fit “the level” naturally, and equalise would require a comparison. Thus A.
More Verbal Aptitude: Grammar and Vocabulary questions
GATE 2020 CY Q3– Select the word that fits: White : Whitening :: Light : .
GATE 2020 MT Q1– He is known for his unscrupulous ways. He always sheds tears to deceive people.
GATE 2020 MT Q2– Jofra Archer, the England fast bowler, is than accurate.
GATE 2020 MT Q3– Select the word that fits the analogy: Build : Building :: Grow : .
GATE 2019 AE Q1– The fishermen, the flood victims owed their lives, were rewarded by the government.
GATE 2019 AE Q5– Until Iran came along, India had never been in kabaddi.