If commands are stored in an external file, say commands.R in the working directory work, they may be executed at any time in an R session with the command _____

A) exect(“command.R”)

B) exec(“commands.R”)

C) execute(“commands.R”)

D) source(“commands.R”)

Correct Answer : source(“commands.R”)

Explanation : For Windows, Source is also available on the File menu.

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