What is the best description of the bohr model of the atom?

a.)the atom consists of a positively charged material with negatively charged electrons embedded within it.
b.)the atom consists of a nucleus with electrons orbiting randomly around it.
c.)the atom consists of a nucleus with electrons orbiting at specific energy levels. absorbed photons cause electrons to jump between energy levels.
d.)the atom consists of a nucleus surrounded by a region containing electrons. electrons cannot be located exactly within this region, but the probability that they will be found in an area can be stated.