in the following four assessment items choose the sentence in which the appositive or appositive phrase is essential to the sentence and punctuated correctly?

A) Weston's first walks a 478-mile journey was from Boston to Washington.
B) Weston's first walk, a 478-mile journey, was from Boston to Washington.

B) Weston's first walk, a 478-mile journey, was from Boston to Washington.

The sentence in which the appositive or appositive phrase is essential to the sentence and punctuated correctly is:

B) Weston's first walk, a 478-mile journey, was from Boston to Washington.

To determine which sentence contains the appositive or appositive phrase that is essential to the sentence and punctuated correctly, we need to understand the definition of an appositive.

An appositive is a noun or noun phrase that renames or identifies another noun or pronoun in a sentence. It provides extra information about the noun or pronoun.

Let's analyze the two sentences:

A) Weston's first walks a 478-mile journey was from Boston to Washington.
B) Weston's first walk, a 478-mile journey, was from Boston to Washington.

In sentence A, "Weston's first walks a 478-mile journey" doesn't contain an appositive because there is no noun or noun phrase that renames or identifies another noun or pronoun.

In sentence B, "Weston's first walk, a 478-mile journey," contains an appositive because the phrase "a 478-mile journey" renames or identifies the noun "Weston's first walk." The appositive provides additional information about Weston's first walk, specifying that it was a 478-mile journey.

Furthermore, sentence B correctly punctuates the appositive by using commas before and after it. Commas are used to set off nonessential appositives.

Therefore, the sentence that contains the appositive or appositive phrase essential to the sentence and punctuated correctly is B) Weston's first walk, a 478-mile journey, was from Boston to Washington.