Final answer:
The simplified expression of 1.75 - 2 is -0.25, which corresponds to option (a).
Step-by-step explanation:
To simplify the expression 1.75 - 2, you subtract 2 from 1.75. This can be done by aligning the decimal points and using standard subtraction:
When you perform the subtraction, you get:
1.75
-2.00
------
-0.25
So, the simplified expression is -0.25, which corresponds to option (a).