Answer:
D. highly unlikely
Explanation:
There are 20 total outcomes.
The number 1 is only 1 outcome out of 20 outcomes.
The probability of it landing on 1 is 1/20.
0 - impossible
0.1 - highly unlikely
0.25 - unlikely
0.5 - even
0.75 - likely
0.9 - highly likely
1 - certain
1/20 = 0.05
0.05 is highly unlikely.