The noun athletics is an uncountable noun that has no singular form.
The word athletic is an adjective, a word that describes a noun.
The possessive form of the plural, uncountable noun is athletics'.
example: The athletics' curriculum at this school is nonexistent.
"Athlete's" would be the possessive form of one athlete. "Athletes'" would be the possessive form of two or more athletes.
The plural form for the noun athlete is athletes.The plural possessive form is athletes'.Example: We raised the money to pay for the athletes' uniforms.
The singular possessive is athlete's. The plural possessive is athletes'.
The possessive singular noun is explorer's. The possessive plural noun is explorers'.
The possessive form for the noun coyote is coyote's.
The possessive form of zoo is zoo's.
The possessive form for the noun preacher is preacher's.
The possessive form for the noun laboratory is laboratory's.
No, he is not possessive. The possessive form would be his.
The possessive form for the noun oxygen is oxygen's.
The possessive form is grandson's.
The possessive form is island's.