Final answer:
The subject of the question is English literature and the lack of opportune moments for a man to propose to a young lady. Examples from different literary works demonstrate characters' struggles and doubts about marriage proposals.
Step-by-step explanation:
The subject of this question is English as it relates to the topic of marriage proposals in literature. The question is asking about the lack of opportune moments for a man to propose to a young lady. Several examples from various literary works demonstrate different characters' struggles and doubts about proposing marriage. In these examples, the characters discuss their fears, concerns, and hopes related to marriage proposals.