Fabric scissors are specially designed to cut cloth smoothly without fraying.
Step 1: Analyze the options.
- Knife — Unsafe for fabric cutting.
- Blade — Not suitable for precise cuts.
- Scissors — Proper tool for fabric.
- Cutter — Used mainly for paper or craft.
Step 2: Conclusion.
Therefore scissors are correct.
Final Answer:
\[
\boxed{(C) \, \text{Scissors}}
\]