What is a scraping instrument often used in traditional music that involves striking two sticks together?

The rasp is indeed a scraping instrument commonly used in traditional music. It produces sound by the friction created when a stick or other object is scraped against its surface. This technique is effective in generating rhythmic and textural sounds that complement various musical styles, especially in folk and traditional contexts.

The other options refer to different types of instruments: the ocarina is a wind instrument typically made of ceramic or plastic, played by blowing into it, while quenas are traditional Andean flutes that produce sound through the vibration of air in a hollow tube. Tarkas, on the other hand, refer to a type of Andean clarinet. None of these alternatives are scraping instruments or involve the action of striking two sticks together to create sound, which reinforces why the rasp is the correct answer in this context.