Into the 1980s, computers were still using punch cards for programs. A common trick was determine the correct order (in case they ever fell or became disorganized)
or drawing a diagonal line on the side of the stack to
O lining
O marking
O naming
O numbering
O striping

the correct answer is option d.

an appositive is a noun, noun phrase or noun clause which follows another noun or noun phrase in order to describe it or name it another way. they are usually used between commas, brackets or dashes.

the example sentence with the correct use of commas is the following:

her uncle, the man over there in the red shirt, owns the hardware store in town.