The correct answer is D) a narrow perspective.
Kenneth, the plant manager, was talking with another manager about Brendan, the lead engineer in the corporate R & D department. Kenneth remarked, "Brendan is so bright, and he is an expert in designing products. But like so many experts, he can’t imagine what it’s like to be as ignorant as the rest of us. I think at times, he cannot see things from an outsider’s perspective."
Brendan is suffering from a narrow perspective.
The narrow perspective means that an individual is so focused on their own things, that forgets the general picture of things and that the fact that other people can have a different view and opinion about a certain topic. That is why Kenneth, the plan manager, thinks about Brendan. So brilliant but he is not considered enough of the other people's limitations on the subject or other peoplés perspectives.