Explanation

Sentence Correction

• The impact of cyber technology on modern society is being studied by researchers, who have found that it has both positive and negative effects.

Explanation

In this sentence, there is just an error related to the “Subject-Verb Agreement in the Relative Clause” or Adjective Clause.

The verb in an adjective clause must agree with the number of the noun it modifies.

In this sentence, the phrase “who has found” is incorrect because the subject of “who” is “researchers”, which is plural.

So, the helping verb “Has” should be changed to “Have” to agree with the plural noun “researchers.”