Question : Find the part of the given sentence that has an error in it. If there is no error, choose 'No error.'
Black holes can has powerful effects on their surroundings.
Option 1: has powerful effects
Option 2: No error
Option 3: on their surroundings
Option 4: black holes can
Correct Answer: has powerful effects
Solution : The error lies in the first option.
The error lies in the verb "has", which is incorrect. The correct form is "have" to match the plural subject "black holes". As per the subject-verb agreement, a plural subject should always be followed by a plural form of the verb.
Therefore, the correct sentence should be: "Black holes can have powerful effects on their surroundings."
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