To find the total number of contestants, \( C \), that audition in \( h \) hours, we need to consider that 33 contestants are auditioning each hour. Therefore, the total number of contestants can be calculated by multiplying the number of contestants per hour (33) by the number of hours \( h \).
The correct equation that represents this relationship is:
A. \( C = 33h \)
So the answer is: A. \( 33h = C \)