The correct option is C football coach
A noun phrase is a group of words containing the noun and
functioning as a subject, object, or preposition of an object, in a
sentence. The noun phrase here is the subject as it performs the action
"was satisfied". 'Football coach' is a phrase made of an adjective
(football) and a noun (coach). Hence it's a noun phrase and option C is
correct. 'Football' on its own is a noun, when placed in the sentence it
doesn't make sense, a football can't possess the feeling of
satisfaction, hence it's not suitable and option A is incorrect. 'Coach'
is a noun but does not have a modifier to make it a noun phrase, hence
option B is incorrect. Similarly, 'player' does not have a modifier,
hence D is also incorrect.