Can someone explain the right answer please?

Let's take a look. (B) says, "Scientific predictions based on computer models often fail when tested in the field." We're looking to resolve the paradox in the stimulus. (B) does a great job of resolving it by stating that predictions based on computer models (as we had) oftentimes do not come true when we actually test them in the real world. Thus, (B) is the correct answer choice. Does this make sense? Let us know if you have any other questions!