Match the words to the correct blanks in the sentences. Use each choice only once. a. The collapse of a protostar with less than 0.08 times the mass of the Sun is halted by. b. As a protostar shrinks in size, its central temperature rises along with its. c. A star that has not yet finished forming is called a. d. A forming star spins more rapidly as it collapses because of conservation of. e. If a protostar has a mass too small for it to sustain nuclear fusion it becomes the type of object known as a. A. thermal pressureB. angular momentumC. energy balanceD. degeneracy pressureE. brown dwarfF. gravitational equilibriumG. protostar