|Question 19Verbal

Source Texts

Text
The giant sequoia (Sequoiadendron giganteum) known as D-23, located in the United States, was one of the oldest known trees in the world, at 3,075 years old. With over three 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 and a
A
rings, a
B
rings a
C
rings. A
D