Final answer:
The parietal lobe of your brain is responsible for allowing you to feel sensations such as an annoying pebble in your shoe.
Step-by-step explanation:
Your brain's parietal lobe is most involved in allowing you to feel an annoying pebble in your shoe.
The parietal lobe is responsible for processing sensory information, including touch. It receives signals from sensory neurons in the skin and interprets them as sensations, such as pain, pressure, or temperature.
For example, when you feel the pebble in your shoe, sensory neurons in your foot send signals to the parietal lobe, which then interprets it as a sensation of discomfort or annoyance.