In the following questions, one part of the sentence may have an error. Find out which part of the sentence has an error and click the option corresponding to it. If the sentence is free from error, click the 'No Error' option. I couldn't be(P)/ more happier to hear(Q)/ the news about your baby(R)/ No error (S).?

Option 2 : Q

There is an error in part Q of the given question. Therefore, the correct answer is option 2. 

The word 'more' along with a qualitative adjective(like 'beautiful') forms a comparative adjective (like 'more beautiful') which is used to make a comparison between two nouns or pronouns. For example- 
Lata was more talented than her brother.
Piya was more excited about the wedding than the bride.

But the word 'more' is only used with those qualitative adjectives which do not have a separate form of comparative adjectives. For instance, the qualitative adjective 'good' has the comparative form 'better' or the word 'clever' has the comparative form 'cleverer'. Then for such adjectives 'more' is not used to form their comparative form. In the given sentence, 'happier' is the comparative form of the adjective 'happy' hence 'more' should be omitted from the sentence.

Correct Sentence- I couldn't be happier to hear the news about your baby.

Tip- Before using 'more' to form the comparative form of an adjective, make sure that the adjective doesn't already have its own comparative form.