Final answer:
The correct word to fill in the blank about dreams that repeat or happen again is 'recur.' Recurrent dreams may be tied to subconscious issues or stress.
Step-by-step explanation:
If you've ever experienced the phenomenon of having the same dream over and over, you would know that dreams can recur, meaning they repeat or happen again. The correct answer to the question 'Have you ever had the same crazy dream night after night? If so, you know that dreams can _________, meaning they repeat, or happen again.' is option c) Recur. Dream recurrence is a fascinating aspect of how our subconscious works, and repeated dreams might sometimes be tied to unresolved issues or ongoing stressors in our lives.