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If the code is stored in the external file, which of the following function is used to call them to a working directory?

a) exec()
b) source()
c) execute()
d) sourcefile()

Answer: b
Explanation: source is available in the file menu. Today R runs on almost any standard computing platform and operating system. Its open source nature. The copyright for the primary source code for R is held by the R Foundation and is published under the GNU General Public License version

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