|Question 18Verbal

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Text
The African baobab (Adansonia digitata) known as Panke Baobab, located in Zimbabwe, was one of the oldest known trees in the world, at 2,419 years old. With over two millennia of climate data in its tree ____ single tree like this, claims dendrochronologist Valerie Trouet, can tell the history of the world.
Which choice completes the text so that it conforms to the conventions of Standard English?
rings. A
A
rings and a
B
rings, a
C
rings; a
D