A)

The spiders web glittered with the morning dew.

b)

The spider's web glittered with the morning dew.

c)

The spiders' web glittered with the morning dew.

d)

The spiders web glittered with the morning dew's.

If there is one spider, B.

If there is more than one, C.

b) The spider's web glittered with the morning dew.

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."