Which option correctly describes both domain & the range?

a) domain: 0 < t < 6
range: 0 < v < 150

b) domain: 6 < t < 150
range: 6 < v < 150

c) domain: t < 6
range: v < 150

d) domain: t > 0
range: v > 0

Domain refers to all of the x-values that satisfy the line, and the range refers to all of the y-values that satisfy the line.

Since t corresponds to the x-ordinates, then the domain becomes:
0 ≤ t ≤ 6

and the range becomes:
0 ≤ v ≤ 150

In short, the answer is (A)