Final answer:
The word 'disconnect' helps the reader understand the term 'wide gulf' as it conveys the idea of a significant separation or difference. option B is correct.
Step-by-step explanation:
The phrase wide gulf typically refers to a large separation or a significant difference between two things or groups. In order to understand what is meant by wide gulf, one should look for a word or phrase that indicates a substantial divide. In this case, the word that helps the reader understand wide gulf is disconnect.
It conveys the idea of a separation or a gap that is not easily bridged, which aligns with the idea of a wide gulf.