Question

The following is an example of—

The woman’s son, a young boy of about six, seemed enamored with the puppy in the window.
A.

a prepositional phrase

B.

an appositive phrase

C.

a participial phrase

D.

a direct object

Answer 1

@Anonymousstudent

Answer 2

@trumpetmaster7777

Answer 3

@iluvreading

Answer 4

I believe it would a prepositional phrase because:
At the minimum, a prepositional phrase will begin with a preposition and end with a noun, pronoun, gerund, or clause, the "object" of the preposition.
The object of the preposition will often have one or more modifiers to describe it.

Answer 5

I would agree with @trumpetmaster7777 and say I believe it is a prepositional phrase.