Explanation
Correct answer: C.
Choice C is the best answer. The sentence makes a claim about the applicability of the farm-size transition hypothesis—the prediction that smaller farms will amalgamate into larger-scale commercial farms as a response to the economic pressures of modernization—to Thailand, noting that the hypothesis may not hold true for Thailand. It supports the claim with the argument from Promkhambut et al. that Thailand’s rice farms have remained small despite modernizing.
Why the other choices are wrong
Choice A
Choice A is incorrect. While the sentence makes a claim about the applicability of the farm-size transition hypothesis to Thailand, it mischaracterizes information from the notes: Promkhambut et al. argue that, despite modernizing in response to economic pressures, rice farms in Thailand have not expanded in size.
Choice B
Choice B is incorrect. The sentence connects a claim from Masters et al. to the farm-size transition hypothesis; it doesn’t make and support a claim about the applicability of the hypothesis to Thailand, specifically.
Choice D
Choice D is incorrect. While the sentence makes a claim about the applicability of the farm-size transition hypothesis to Thailand, it doesn’t support the claim.