|Question 1Verbal

Source Texts

Text
Domesticated thousands of years ago in South America, the tomato deviates structurally from the wild plant it is descended from. Maize (corn), another domesticated crop from the Americas, doesn't closely resemble any wild plant, and genetic research only recently        its ancestor to be teosinte grass.
Which choice completes the text with the most logical and precise word or phrase?
petitioned
A
expanded
B
revealed
C
encouraged
D