In the given sentence, some parts are printed in bold. The emboldened parts may or may not be correct. Choose the part which is incorrect and needs improvement.
I had better to explain our use of the manual alphabet, which seems to puzzle people who do not know us.

Options

A. better to explain our
B. the manual alphabet, which
C. to puzzle people
D. not know us

Answer

A

Explanation

The error is in the segment .better to explain our..
The infinitive is always used without .to. after .had better..
Hence, it should have been .had better explain. to make the sentence grammatically correct.
Therefore, option A is the correct answer.