It keeps observations in a data set x that have a match in a data set y and returns just the columns from the data set x.

 It keeps observations in a data set y that have a match in a data set x and returns just the columns from the data set x.

 It keeps observations in a data set x that have a match in a data set y and returns just the columns from the data set y.

right_join() prioritizes the right data set while left_join() prioritizes the left data set

right_join() prioritizes the left data set while left_join() prioritizes the right data set

There is no difference

Yes

This answer is incorrect. Yes is the correct answer. If you click this you get 0. So I suggest you click Yes.

Cannot restore previously edited files into the editor tabs

Keep all your files together

Set the working directory to the project directory

Starts a new session of R