Answer:
B). Doubt
Step-by-step explanation:
The word 'benighted' stands for 'to darken or overtaken by obscurity' in literal terms. In the poem 'Desert Places' authored by Robert Frost, the central idea of loneliness is discovered throughout the four stanzas. In the third stanza, the use of the word 'benighted' connotes 'the doubt' that the speaker is undergoing regarding that whether his loneliness would increases or it will be less. Thus, option B is the correct answer.