180
240
420
480
Answer is Right!
Answer is Wrong!
The missing term is 80. The sequence is a list of numbers that are each half the value of the previous number. Therefore, the answer is $\boxed{80}$.
Option A, 180, is incorrect because it is not half of 240.
Option B, 240, is the first number in the sequence, so it is not the missing term.
Option C, 420, is not half of 240.
Option D, 480, is not half of 240.