The correct answer is D. all of the mentioned.
The read.spss() function in the psych package can be used to load data from SPSS. The read.oct() function in the MASS package can also be used to load data from SPSS. The read.xpot() function in the Hmisc package can also be used to load data from SPSS.
The read.spss() function is the most commonly used function to load data from SPSS. It can read data from SPSS files in a variety of formats, including .sav, .por, and .dta files. The read.oct() function is a less commonly used function, but it can be used to read data from SPSS files in the .oct format. The read.xpot() function is a newer function that can be used to read data from SPSS files in the .xpot format.
All three of these functions are relatively easy to use. The read.spss() function has a number of options that can be used to control how the data is read, such as the variable names and the data types. The read.oct() and read.xpot() functions have fewer options, but they can still be used to read data from SPSS files in a variety of formats.
If you are working with data from SPSS, you can use any of these three functions to load the data into R. The function that you choose will depend on the format of the SPSS file that you have.