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Which of the following return a subset of the columns of a data frame?

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Which of the following return a subset of the columns of a data frame? (a) select (b) retrieve (c) get (d) set This question was addressed to me in quiz. My question is based upon dplyr in portion R – Data Storage, Formats, Objects and Operations of R Programming Select the correct answer from above options

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The correct option is (a) select The explanation: One important contribution of the dplyr package is that it provides a “grammar” for data manipulation and for operating on data frames.

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