Concept:
Tactile sensors are used in robotics and automation to detect touch and interaction forces.
Step 1: Meaning of tactile sensing.
“Tactile” relates to sense of touch.
Step 2: What is measured.
These sensors measure:
• Contact force
• Pressure distribution
• Surface interaction
Step 3: Application insight.
Used in:
• Robotic grippers
• Artificial skin
• Industrial automation
Step 4: Choose correct option.
Among given choices, force best represents tactile measurement.
Final Answer:
\[
\boxed{\text{Force}}
\]