The cows are being milked by his father
Options A) and B) are not possible in any context in English.
option C could be possible but only for a proper name "his". As in, Imagine someone had a nickname "His".
The correct option is D) his - this the the genitive form of "he"
Answer:
a pro sportsman is a really hard job and takes a really long time to catch something also there might be bigger fish that can probably harm you or you can even start sinking so i would say no my opinion:)
Explanation: