You are presented with the question "What occurs when muscles contract and propel male gametes?" and the following answer choices: 
- fertilization
 - sex
 - ejaculation
 - electrically
 - rapid expansion
 - motion
 - competition
 - intercourse

Now knowing that ejaculation occurs when muscle contractions propel sperm from the epididymes and male gametes are called sperm, choose the best answer.


 

   ejaculation      