Final answer:
The value of the expression 1-3m when m = 61 is -182.
Step-by-step explanation:
To evaluate the expression 1-3m when m = 61, we substitute the value of m into the expression.
1-3(61) = 1-183 = -182
Therefore, the value of the expression 1-3m when m = 61 is -182. Hence, the correct option is D. -189.