Question

whales are intelligent
introduction draft
which background information should be used for this
introduction?
whales have been shown to be capable of problem solving,
communication, and the use of tools.
the deepest part of the ocean is seven miles deep in the mariana
trench.

Explanation:

The introduction is about whales being intelligent. The first option about whales' problem - solving, communication, and tool - use directly relates to intelligence. The second option about the ocean's depth is irrelevant to the topic of whale intelligence.

Answer:

Whales have been shown to be capable of problem solving, communication, and the use of tools.