How does the dog detect the whale?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4, i.e., Sniffs whale faeces.
According to the passage, the dog named Tucker helps researchers by sniffing for whale faeces floating on the water's surface. These samples are then collected for scientific examination.
Incorrect Options:
Watches for whales – dogs rely on smell, not sight.
Sniffs whale skin – not mentioned in the passage.
Listens to whale voices – dogs are used for scent detection, not sound.
Conclusion: The dog detects the whale by sniffing whale faeces.