22. What type of seismic waves are produced during an earthquake? a. Pand S waves b. M and P waves c. radioactive waves

The correct answer is **a. P and S waves**.<br /><br />Earthquakes produce two main types of seismic waves: Primary waves (P-waves) and Secondary waves (S-waves). Option c is incorrect; radioactive waves are associated with nuclear processes, not earthquakes. Option b is also incorrect as there are no recognized "M-waves" in the context of seismology.<br />