Step 1: Concept
Using VSEPR theory for $ClF_3$: Central atom Cl has 7 valence electrons.
Step 2: Meaning
3 electrons pair with F, leaving 4 electrons (2 lone pairs). Total 5 electron pairs.
Step 3: Analysis
Geometry is Trigonal Bipyramidal, but with 2 lone pairs at equatorial positions, the molecular shape is T-shaped.
Step 4: Conclusion
Hence, correct answer is T-shape.
Final Answer: (B)