What is thermal expansion and how does it impact analytical measurements?

• A. Thermal expansion is the increase in volume of a substance due to temperature increase, affecting measurement accuracy.
• B. Thermal expansion is the change in color of a substance due to temperature increase.
• C. Thermal expansion has no impact on analytical measurements.
• D. Thermal expansion is the decrease in volume of a substance due to temperature increase, improving measurement accuracy.

Answer: (A)