In the question in which the whole sentence is underlined, it is really difficult to understand the meaning of the sentence especially when the sentence itself is wrong and the sentence itself is not making sense.
A) Investment by a scientist in an established theory, especially because
it has helped to attribute unobservable causes to phenomena, makes
it likely to overlook gaps in the observable data or justify them too readily. -
The first it seemed to correct refer to the theory but the second it is referring to whole situation which cannot be doneB) A scientist who is invested in an established theory, especially because it has helped to attribute unobservable causes to phenomena,
makes overlooking gaps in the observable data
or justifying them too readily likely when they do occur. -
parallelism errorC) A scientist who is invested in an established theory is likely to overlook or justify too readily a gap in the observable data when
it does appear, especially because
it has helped to attribute unobservable causes to phenomena. -
Was stuck on this for good 2 minutes until I found that the second it refers to a situation similar to (A)D) Scientists' being invested in an established theory, especially because it has helped to attribute unobservable causes to phenomena,
makes them likely to overlook gaps in the observable data
or justifying them too readily when they do appear. - Parallelism Error
E) Being invested in an established theory, especially one that has helped to attribute unobservable causes to phenomena, is likely to make scientists overlook gaps in the observable data or justify them too readily. -
Best choice with no ambiguous meaning(E) is the correct answer.