Which sentence includes an adjectival phrase?

a. The American chameleon, a type of lizard, can change colors to blend with the environment.
b. The fastest land mammals, cheetahs, reach speeds in excess of 65 miles per hour.
c. The length of a person's forearm can often be used to identify the person's shoe size.
d. She took her article to Mr. Maple, a newspaper editor.

I'm having some trouble on this.

There are three prepositional phrases that modify nouns and thus are adjective phrases.

I'll be glad to check your answers.

Yes. C has an adjectival phrase. B has two adjectival phrases.

b. The fastest land mammals, cheetahs, reach speeds in excess of 65 miles per hour.

in excess modifies speeds
of 65 miles per hour modifies excess

So, both B and C would be acceptable?

And, isn't excess a noun in this case?

Yes, both B and C are correct. Excess is a noun.

And one more in B. per hour is an adjectival phrase modifying hour.

To identify the sentence that includes an adjectival phrase, we need to understand what an adjectival phrase is. An adjectival phrase is a group of words that function as an adjective in a sentence, providing more information about a noun or pronoun. It typically consists of an adjective along with any modifiers or complements.

Now, let's analyze each sentence and identify which one includes an adjectival phrase:

a. The American chameleon, a type of lizard, can change colors to blend with the environment.

In this sentence, the adjectival phrase is "a type of lizard." It provides additional information about the noun "American chameleon."

b. The fastest land mammals, cheetahs, reach speeds in excess of 65 miles per hour.

In this sentence, the adjectival phrase is "the fastest land mammals." It describes the noun "cheetahs."

c. The length of a person's forearm can often be used to identify the person's shoe size.

This sentence does not include an adjectival phrase. It provides a statement but does not contain a group of words functioning as an adjective.

d. She took her article to Mr. Maple, a newspaper editor.

In this sentence, the adjectival phrase is "a newspaper editor." It provides more information about the noun "Mr. Maple."

Therefore, the correct answer is option d: "She took her article to Mr. Maple, a newspaper editor."