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d. The ability to change into the directory

From

Cover of CompTIA® Linux+ / LPIC-1 Cert Guide: (Exams LX0-103 & LX0-104/101-400 & 102-400)

Note

D. Answer D is correct because the fourth column is the options column and the user option is the proper one to use. Answers A and B include valid options but are in the wrong column. Answer C is the wrong option in the right column.