Answer:
b) The spider’s web glittered with the morning dew.
Step-by-step explanation:
This is the sentence that correctly employs a possessive form. In this sentence, the author wants to indicate that the web he is talking about was created by a single spider. Therefore, the noun "spider" would be singular and the possessive would indicate that the web belongs to it. The correct way of describing such a situation is "the spider's web."