Read the following passage about an unusual species and mark the letter A, B, C or D on your answer sheet to indicate the option that best f...

Read the following passage about an unusual species and mark the letter A, B, C or D on your answer sheet to indicate the option that best fits each of the numbered blanks from 18 to 22.

Christmas Island, in the Indian Ocean, (18) ______. Endemic to the island, it is estimated that between 40 and 50 million of these bright red crabs live on Christmas Island. These large crabs, (19) ______, are classed as “arthropods” and they live in the island’s shady, moist rainforest. Although they are not nocturnal creatures, they prefer to avoid direct sunlight to preserve their body moisture. (20) ______. Although their diet consists mainly of leaves, fruit, flowers, and seedlings, they are omnivorous scavengers and will also eat other dead crabs and birds. (21) ______.

At the beginning of the annual wet season, the crabs migrate from their forest habitat to the coast to breed. After mating, the males return to the forest, but the females remain on the beach for another two weeks, after which they lay their eggs – up to 100,000 of them – in the ocean at high tide. The eggs released by the females hatch as soon as they come into contact with the seawater. Washed out to sea, (22) ______.

(Adapted from Reactivate)

Question 18:
A. is home to a very unusual species - the red crab
B. to be home to a very unusual species - the red crab
C. that is home to a very unusual species - the red crab
D. of which the red crab is home to a very unusual species