Choose the part of the sentence that is grammatically incorrect :
He has committed / a blunder / mistake / today morning.

Question

Choose the part of the sentence that is grammatically incorrect : 
He has committed / a blunder / mistake / today morning.

Accepted Answer

The grammatically incorrect part of the sentence is "mistake" (Option 3). Here's why:

*   **Why "mistake" is incorrect:** The phrase "a blunder mistake" is redundant. A blunder *is* a mistake, specifically a stupid or careless one. Using both words together creates unnecessary repetition and awkward phrasing. The sentence would be grammatically correct if it said "He has committed a blunder today morning" or "He has committed a mistake today morning." The problem is the unnecessary addition of "mistake" after "a blunder."

*   **Why the other options are correct:**

*   **"He has committed" (Option 1):** This part of the sentence is grammatically sound. "Has committed" is the present perfect tense of the verb "commit," and it's used correctly in this context to indicate an action that happened at an unspecified time in the past (today morning).

*   **"a blunder" (Option 2):** "A blunder" is grammatically correct. "Blunder" is a noun, and "a" is the appropriate indefinite article to use before it. While the phrase contributes to the redundancy when paired with "mistake," it is not inherently grammatically incorrect on its own.

*   **"today morning" (Option 4):** While "this morning" is more common and arguably more natural-sounding, "today morning" is not strictly grammatically incorrect. It's an acceptable, though less frequently used, way to refer to the morning of the current day. The main grammatical error lies in the redundancy of "a blunder mistake."