Final answer:
The fraction that describes Poir/Q in simplest form is 6/1.
Step-by-step explanation:
To determine which of the fractions, when in simplest form, describes Poir/Q, we need to simplify each fraction.
For option A, 0/9, the numerator is already in its simplest form, since any number divided by 0 is 0. However, the denominator, 9, can be simplified by dividing both the numerator and the denominator by their greatest common factor, which is 1. Therefore, the simplified form is 0/1.
For option B, 12/9, the numerator and denominator share a common factor of 3. Dividing both the numerator and the denominator by 3 gives us the simplified form, 4/3.
For option C, 18/3, both the numerator and denominator share a common factor of 3. Dividing both the numerator and the denominator by 3 gives us the simplified form, 6/1.
For option D, 4/12, the numerator and denominator share a common factor of 4. Dividing both the numerator and the denominator by 4 gives us the simplified form, 1/3.
Therefore, the fraction that describes Poir/Q in simplest form is option C, 6/1.