The mass of 1 gram: a. is kept as a standard platinum cylinder in france b. is .01 kg c. equals the mass of 1 ml of water at 4°c d. equals 1 cm³

C. equals the mass of 1 mL of water at 4°C

Explanation:

The gram is metric system unit of the mass.

1 gram is defined originally as absolute weight of the volume of the pure water equal to 1 mL which is at 4 °C, the temperature at which the density of the water is maximum density.

It was adopted and also introduced by French National Convention in 1793.