Final answer:
The nurse should use palpation to assess tactile fremitus in a client with pneumonia.
Step-by-step explanation:
To assess tactile fremitus in a client with pneumonia, the nurse should use palpation. Tactile fremitus is the vibration felt when the client speaks, and it can be used to assess lung consolidation and the presence of pneumonia. The nurse should place their hands on the client's chest and ask them to repeat a phrase, such as '99' or 'blue balloons,' while feeling for vibrations. Increased intensity of vibrations may indicate lung consolidation and pneumonia.