To understand why option A is the correct answer, let's break down the sentence:
"Tanya is a graceful dancer."
In this sentence, the subject is "Tanya" and the verb is "is." The phrase "a graceful dancer" is the subject complement, which describes Tanya.
Option A) graceful - This option is correct because it describes the quality of Tanya's dancing. It is an adjective that modifies the noun "dancer" in the sentence.
Option B) is - This option is incorrect because it is the verb that connects the subject "Tanya" with the subject complement "a graceful dancer." It does not describe Tanya's dancing ability.
Option C) dancer - This option is incorrect because it is the noun that "graceful" describes. It is the object of the verb "is" in the sentence, but it does not describe Tanya.
Option D) Tanya - This option is incorrect because it is the subject of the sentence. It does not describe Tanya's dancing ability.
Therefore, the correct answer is option A) graceful, as it correctly describes Tanya's dancing ability.