Correct option is B
An electronic digital caliper displays measurements using a Liquid Crystal Display (LCD). This allows direct and accurate reading of dimensions without requiring manual interpretation, as in vernier or dial calipers. The LCD shows measurements in millimeters or inches instantly, reducing human error and improving efficiency. Digital calipers are widely used in precision engineering due to their ease of use and high accuracy. Other options like dial gauge, mechanical counter, or vernier scale belong to older measuring systems. Hence, option b correctly identifies the display method.