Which ever you like the most...
The family is not very strong at promoting nationalism: for once, there can be family members of other nationalities, which would promote multinationalism! so we can reject a) and c)
now, military and state religion are both found in the other options and we have to choose between school and athletics - and school is more effective! so the correct answer is D.
Occupations in the SOC with similar job duties, that require similar skills, education and/ or training are grouped together
I think the answer to your question, is Public Support. Hope it helps......