Snorkelling is a sport in which a person uses swimming aids like a snorkel and does both swimming and diving. This does not require core muscle strength. So the correct option is option A.
What is snorkelling?
It is a sport in which a person dives in the water or swims through its surface wearing special equipment called a snorkel.
A snorkel is a shaped tube-like structure and is used along with a diving mask and fins. Snorkelling is a recreational activity mostly done for observing marine life like plants, coral reefs and fish.
It is different from scuba diving because scuba is done at a much greater depth than snorkelling. Scuba diving also requires more equipment than snorkelling including a wet suit/dry suit, gas tank, scuba regulator, diving mask and fins. The fins are optional in case of snorkelling.
Even though snorkelling is thought to be an easy sport, it still requires some basic skills, equipment and knowledge about the ocean.
Therefore the correct answer is option A.
Read more about snorkelling, here https://brainly.com/question/14307371
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