Which of the following is considered to be the tallest known living organism on the Earth?

Correct answer: (b) Sequoia tree

Explanation

The tallest known living organisms are the sequoia (redwood) trees of California. The tallest known tree, a coast redwood (*Sequoia sempervirens*) named Hyperion, is about 116 m tall.

Its relative, the giant sequoia (*Sequoiadendron giganteum*), is the largest tree by volume; the best known is the "General Sherman" tree. The banyan is the tree with the widest spread, and the sausage tree and jojoba are much smaller.