Verified answer

⇒ Danny is more sweeter among his siblings.

• More sweeter is wrong grammar. But neither more sweet nor more nor sweeter should be used in the sentence since Danny is being compared by atleast two people. So the sentence should be: Danny is the sweetest among his siblings.

Answer:

The ''more sweeter'' is what makes this sentence grammatically incorrect. The word sweeter is in a comparative degree of adjective but you have to use the superlative degree since it says ''among'' his siblings. Therefore, to make it right, the sentence would be ''Danny is the sweetest among his siblings''.