Answer: According to Swift, he has "not the least personal interest in endeavouring to promote this necessary work."
Step-by-step explanation:
Based on the information given and from the options, we can infer that the statement that effectively uses a quotation to relate Swift’s claim that he has no personal motive for making this proposal is that "According to Swift, he has "not the least personal interest in endeavouring to promote this necessary work."
The other options given are incorrect as they do not go along with the question asked.