The purpose of being an Information and Media Literate is to engage in a digital society where one needs to be able to use, understand, inquire, create, communicate and think critically. It is important to have the capacity to effectively access, organize, evaluate, and create messages in a variety of forms.
Disinterested does not mean uninterested; rather, disinterested means impartial or unbiased.
Incredible means not credible, that is, not believable. So incredible is the opposite of believable. To complete the analogy posed in the question, we need to supply an opposite of disinterested. So I'll go with partial as my answer:
Incredible is to believable as disinterested is to partial.
Is partial an answer choice? If not, pick the choice most similar to partial.