C i think, hope this helps
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.
"There's a fascinating psychological reason behind your belief in ghosts<span>. Halloween is a time to celebrate </span>ghosts<span>, vampires, and everything supernatural. ... More than a third of </span>people<span> surveyed also said they </span>believed in ghosts<span> or spirits returning from the dead."</span>
