The correct answer should be Katie insists that an office job would be less interesting than an outdoor job.
That is because this is an opinion of hers as someone might find it more interesting to work in an office, therefore insisting that it is the general truth is wrong.
Near the end of a reports introductory paragraph
so the answer would b “A”
The last sentence certainly sums up the rest of the contents. I think you ought to choose the second answer.
