SCIENCE HELP PLEASE!? :(

If a student wanted to measure the length of an earthworm?
A.centimeters
B.meters
C.kilometers
D.micrometers

If you wanted to know what volume of milk in metric units is contained in a gallon of milk, to which unit would you convert?

A.milliliters

B.liters

C.miles

D.kelvin

Describe the metric standard units for electric current, temperature, and luminous intensity.