Fossils of the arm of a sloth found in Puerto Rico in 1991, and dated at 34 million years old, made it the earliest known mammal of the Greater Antilles islands.
A. sloth found in Puerto Rico in 1991, and dated at 34 million years old, made it the earliest known mammal of- Though this sentence has not grammatical errors, option D gives much clear and better understanding of the sentence.
B. sloth, thatthey found in Puerto Rico in 1991,has been dated at 34 million years old, thus making it
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A. sloth found in Puerto Rico in 1991, and dated at 34 million years old, made it the earliest known mammal of- Though this sentence has not grammatical errors, option D gives much clear and better understanding of the sentence.
B. sloth, thatthey found in Puerto Rico in 1991,has been dated at 34 million years old, thus making it
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