What is true when a noun precedes a gerund (a verb form ending in - ing that is used as a noun) ? both function as adjectives. you should use possessive pronouns or add an apostrophe and the letter s (that is, 's) to the noun to indicate ownership. you should place a comma before the noun to avoid creating a run-on sentence?

you should use possessive pronouns or add an apostrophe and the letter s (that is, 's) to the noun to indicate ownership.

Explanation:

When there is a noun followed by a gerund, possession is expressed by adding 's to the noun. A few examples of a noun + gerund is with possessive case are:

Everyone loved my grandmother's cooking.

The policeman got immediately into the burglar's house.

Besides, possessive pronouns are also used to indicate ownership before gerunds, as in:

His loud talking disturbed the patients at the hospital.

Their expensive travelling made people jealous.

you should use possessive pronouns or add an apostrophe and the letter s (that is, 's) to the noun to indicate ownership.

Explanation:

When a noun precedes a gerund, use the possessive case of the noun.

e. g. My roommate's snoring often wakes me up.