For the question:
If you want only to scan fewer ports than the default scan using Nmap tool, which option would you use?
I think the correct answer should be -F not -P, see:
-F (fast)
By default, Nmap scans the 1,000 most popular ports of each protocol it is asked to scan. Alternatively, you can specify the -F (fast) option to scan only the 100 most common ports in each protocol or --top-ports to specify an arbitrary number of ports to scan.
For the question: If you want only to scan fewer ports than the default scan using Nmap tool, which option would you use?
I think the correct answer should be
-F
not-P
, see: