What are the element of a short story in the last leaf?

The story is set in Greenwich Village, New York City during a pneumonia epidemic in the early 1900s. The story is narrated from a third-person perspective; the point of view stays closest to Sue. The story's tone is one of ironic detachment; the mood is largely pessimistic, though it ends on a heartwarming note

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comfortable

explanation:

one type of the adjectives is predicate adjective. a predicate adjective is an adjective which follows a linking verb and modifies or refers back to the main subject of that linking verb.

it usually is used just before the noun it modies.

here in this example:

'penguins seem comfortable in the coolest habitats', comfortable is the predicate adjective which follows the linking verb 'seem' and modifies the noun.