The scissors, which (1)/ are on the table. (2)/ belongs to Radha. (3)/ No error (4)

Answer

3

Explanation

Here, scissors is a Plural Subject.
When used as a pair, a Singular Verb is used.
Look at the sentences :
My scissors are sharp.
A pair of scissors has been bought.
Hence, Plural Verb i.e., belong to Radha is the right usage.