The correct sentence is —
She is tallest girl in the class
She is the most tallest girl in the class
She is the taller girl in the class
She is the tallest girl in the class
Explanation:
Correct Answer is: She is the tallest girl in the class

She is tallest girl in the class
She is the most tallest girl in the class
She is the taller girl in the class
She is the tallest girl in the class
Correct Answer is: She is the tallest girl in the class

Which of the following is not a noun? Option A: Friendliness , Option B: Softly , Option C: Livelihood, Option D: Responsibility, correct answer is: Softly
`I shall help you provided you obey me.` Here the underlined word is a/an- Option A: adverb , Option B: adjective , Option C: conjunction, Option D: verb, correct answer is: conjunction
What is the adjective form of `star` ? Option A: Stary , Option B: Starry , Option C: Asterisk, Option D: Starful, correct answer is: Starry
The verb form of word `social` is- Option A: Society , Option B: socialize , Option C: sociology, Option D: societal, correct answer is: socialize
`Wind the watch` - the underlined is an example of: Option A: verb , Option B: Noun , Option C: Adjective, Option D: Interjection, correct answer is: verb