Solution:

We look for the relationship between the first pair and apply it to the second.

Sitar : Guitar — both are string instruments (plucked, melodic). So the pair groups instruments by their family (string vs wind vs percussion vs keyboard).

Tanpura is also a string instrument (used for a sustained drone). Among the options, the instrument that belongs to the string family is Violin.

✅ Correct Answer: (B) Violin