Final answer:
The pair number for white/green is Pair 9.
Step-by-step explanation:
The pair number for white/green is Pair 9, as indicated by option c) in the given choices. In a standard color-coding scheme for twisted pair cables, the pair number for white/green is Pair 9. The pairs are typically numbered in a sequence from 1 to 25 in telecommunications cabling, with each pair having a specific combination of colors. The white/green pair is associated with Pair 9 in this numbering convention. This color-coding is often used in Ethernet and other networking applications for the identification of individual pairs within a cable.