According to the passage about the platypus, how does it find its prey underwater?
Read the passage: The platypus, found in rivers and streams of eastern Australia, is one of only a handful of mammals that lay eggs. Along with the echidnas, it belongs to a group called monotremes. A female platypus usually lays one or two small eggs and curls around them until they hatch, after which she feeds the young with milk. The animal hunts underwater with its eyes, ears and nostrils closed. Instead of sight, it relies on its soft, sensitive bill, which can detect the tiny electrical signals produced by the muscles of shrimps, worms and insect larvae. Male platypuses also carry a sharp spur on each hind leg that can deliver a painful venom, an unusual feature for a mammal.
Correct answer D. By sensing tiny electrical signals with its bill
The passage says the platypus closes its eyes, ears and nostrils underwater and uses its sensitive bill to detect electrical signals from the muscles of its prey.
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