The calm areas near the equator where warm air rises

a. horse latitudes
b. trade winds
c. doldrums
d. polar easterlies

C.doldrums regions near the equator with very little or no wind are called doldrums

The proton has a positive charge while the neutron has no charge they both make up the nucleus of the atom while the elections have a negative charge and surround the nucleus of the atom. the protons and electrons are used to calculate the atom's mass whereas the neutrons don't affect the mass

Ithink the answer is c. i’m not sure though i’ll notify you when i have an exact answer!