The following sentence has been divided into parts. Identify the part that contains the grammatical error.
"Intrigued by this (1)/ problem, I began search (2)/ for a solution. (3)/ No Error (4)"

The incorrect part is "I began search."
Detailed Grammar Explanation:
· "Search" is a noun, but after "began," we need a verb in its "-ing" (gerund) form or an infinitive.
· "Began searching" or "began to search" is correct.
Correction:
· "Intrigued by this problem, I began searching for a solution."
Example
· "He began searching for his lost keys."