Step 1: Think of the pairs:
Tabla goes with Khayal, Thumri, Tappa and other light forms. Pakhawaj goes with Dhrupad and Dhamar.
Step 2: Reason from the sound:
Dhrupad is sung in a slow, grave style with long notes. The deep sound of the Pakhawaj suits this style, while the lighter tabla suits the quick forms.
Step 3: Remove wrong options:
Khayal and Tappa belong to the tabla group. Kajri is a light seasonal song. All three are removed.
Step 4: Result:
Only Dhrupad remains, which is option 3.
Final Answer:
Option 3 is correct: Dhrupad.
\[ \boxed{\text{Dhrupad (option 3)}} \]