In a reference-based implementation of a stack, the stack can grow and shrink dynamically.

What is the maximum number of comparisons that would be needed to determine whether or not a match is found in a binary search of 64 elements?

a) 6 b) 7 c) 63 d) 64

The ____________________ frame does not change the appearance of the button.

Fill in the blank(s) with the appropriate word(s).