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Option 2 : 2
The error lies in part 2 of the sentence as the verb 'have' is incorrect and must be replaced with 'has' to make the subject agree with the verb. The subject is singular, which is 'rise of modified crops' thus the singular verb 'has' needs to be used. Option 2 is the correct answer.
It should read as:
'The rise of commercialised genetically modified crops has provided economic benefit to..'
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