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.

a rain shadow is a dry region of land on the side that is protected against the prevailing winds of a mountain range. the prevailing winds are the winds that occur most of the time in a particular place of the earth

prevailing winds carry air toward the mountain range. as the air rises up over a mountain range, the air cools, water vapor condenses, and clouds form. on this side of the mountains, called the windward side, precipitation falls in the form of  rain  or snow. this dry air produces a  rain shadow.

your answer would be “dry”