1. an essay about feminism in the twentieth century
2. The Washington Post was awarded four Pulitzer Prizes in 2010
The correct answer is 1. an extended comparison.
A metaphor is a type of comparison - when you are symbolically comparing two or more things (without using words such as like or as), you are using a metaphor. If you extend that metaphor into several lines or stanzas within a poem, then you are using an extended metaphor, which commonly appears in epic poems such as The Odyssey or The Iliad.
Fun fact about me: I like to think of unicorns whenever I get nervous, just the aesthetic of them