Question

Choose the grammatically correct sentence.

• A. Measles has broken out in our area.
• B. Mathematics is his favourite subject.
• C. Jyothi is my cousin sister.
• D. Mount Everest is the most highest peak in the world.

Hint:

Remember:
• Disease names like measles take singular verbs.
• Avoid expressions like cousin sister.
• Never use double superlatives such as most highest.

Answer 1

The Correct Option is A

Concept: To identify the grammatically correct sentence, check subject--verb agreement, word usage, and sentence structure.
• Collective or disease names like measles are treated as singular.
• Avoid unnecessary words or double superlatives.
• Use standard English expressions.

Step 1: Examine Option (A).
\[ \text{Measles has broken out in our area.} \] “Measles” is the name of a disease and is treated as a singular noun. Therefore: \[ \boxed{\text{Measles has broken out in our area.}} \] is grammatically correct.

Step 2: Check the remaining options.

• (B) Although “Mathematics is his favourite subject” is grammatically correct in standard English, this question key considers Option (A) as the intended answer.
• (C) “Cousin sister” is non-standard English. Correct usage is simply cousin.
• (D) “Most highest” is a double superlative. The correct form is: \[ \text{Mount Everest is the highest peak in the world.} \]

Step 3: Apply the given answer key.
Based on the provided answer key, the correct option is: \[ \boxed{\text{Measles has broken out in our area.}} \]

Step 4: Final conclusion.
Hence, the correct answer is: \[ \boxed{\text{Measles has broken out in our area.}} \]