Step 1: Understanding the sentences.
The two given sentences state two negative facts: Ravi is not a technician, and Ravi is not a musician. We must combine them into one correct sentence.
Step 2: Analyzing the options.
(A) is grammatically incorrect and changes the meaning to positive.
(B) correctly uses the correlative conjunction neither...nor to combine two negative statements into one proper sentence.
(C) changes the meaning by stating Ravi is a musician, which contradicts the original statement.
(D) also changes the meaning because it suggests Ravi is a technician.
Step 3: Conclusion.
Therefore, the correct combined sentence is option (B), which preserves the original negative meaning properly.