A a metaphor that sustains the comparison for several lines, or for an entire poem
B a commonly used metaphor that has become part of ordinary language
C a metaphor that suggests the comparison rather than stating it directly
D a metaphor that makes a comparison by using the words “like” or “as”
An extended metaphor, also known as a conceit or sustained metaphor, is when an author exploits a singlemetaphor or analogy at length through multiple linked vehicles, tenors, and grounds throughout a poem or story , this should help you :)