Final answer:
The sentence that includes a singular possessive noun is 'Snowboarding is a family affair in Hannah Teter's family.'
Step-by-step explanation:
Sentence 1:
Snowboarding is a family affair in Hannah Teter's family
Sentence 2:
Snowboarding is a family affair in Hannah Teters' family
Sentence 3:
Snowboarding is a family affair in Hannah Teters family
Sentence 4:
Snowboarding is a family affair in Hannah Teters family
The sentence that includes a singular possessive noun is sentence 1: Snowboarding is a family affair in Hannah Teter's family.
Learn more about Possessive nouns