Answer:
b. emission; expulsion
Step-by-step explanation:
Stage one - Emission: Sperm are moved from the testicles and the epididymis (where the sperm are stored already as semen) to the beginning of the urethra (the hollow tube through the penis that transports sperm or urine.)
Stage two - Expulsion: The semen is pushed through the urethra by muscular contractions and released from the body.