The correct answer is D) preconceived ideas.
Interpretation of data based on one's own perspective can lead to preconceived ideas.
When one has preconceived ideas is too difficult to accept things that are different from what it is already believed. Preconceived ideas make people appear stubborn, thinking that what they know is what is valid. But the real thing is that everything changes. We have to be open to new ideas about ways to do things. If we do, we are going to realize that we can learn new things or improve the things we know.