Which of the following tools should a scientist use to measure an object in milligrams? a. Electronic balance b. Pan balance. c. Tape measure d. Thermometer

electronic balance

Explanation:

Milligram is the unit to measure the mass. It is the very small unit of mass.

1 mg = 0.001 g

To measure the mass which has the order of milligram, we choose electronic balance. It is to be measured accurately by using the electronic balance.

c. Tape measure.

Explanation:

Here in this case we have to measure the length of the object (distance) so we need to use tape measure.

Tape measure is a device used to measure small distances. It consists of ribbon of clothes, plastic, fiber. glass or metal strip with linear measurement markings. rest all options do not measure length.