CAT 2020 Sentence Correction and Error Correction — Previous Year Question

In the following question, four sentences are given which may contain grammatical or contextual errors. Choose the one which contains an error. If there is no error in any of the four sentences, mark (e) i.e. "All are correct":

A) If we show an awareness of our own political leanings, it makes us more trustworthy B) Journalism must retain its ability on scrutinize the state rather than becoming a cheerleader C) The government has been relying almost entirely on providing fiscal relief in the form of tax cuts. D) To incorporate the unorganized sector, data from alternative sources need to be used.