Question

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) source(“commands.R”)

(b) exec(“commands.R”)

(c) execute(“commands.R”)

(d) exect(“command.R”)

This question was addressed to me in an international level competition.

This intriguing question comes from Console Input and Evaluation topic in chapter History, Overview and Getting Started of R Programming

Answer 1

The correct answer is (a) source(“commands.R”)

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