A pattern calls for three different fabrics.

To determine the order of the fabrics from least to greatest, we need to convert all measurements to decimals or improper fractions for easy comparison.

1. **Fabric : 3 7/8 yards
- Convert to decimal: \(3 + \frac{7}{8} = 3 + 0.875 = 3.875\) yards

2. **Fabric B**: 3 1/5 yards
- Convert to decimal: \(3 + \frac{1}{5} = 3 + 0.2 = 3.2\) yards

3. **Fabric C**: 9/3 yards
- Convert to decimal: \(9 \div 3 = 3\) yards

Now we have:
- Fabric A: 3.875 yards
- Fabric B: 3.2 yards
- Fabric C: 3 yards

Ordering these from least to greatest:
- Fabric C (3 yards)
- Fabric B (3.2 yards)
- Fabric A (3.875 yards)

Thus, the correct order from least to greatest is **C, B, .

The answer is:
**d. C, B,