The complement of an event includes all outcomes that are not part of the event itself. In this case, the event is "a die lands with a 6 on top." The outcomes that are not this event are when the die lands with a 1, 2, 3, 4, or 5 on top.
Given the options:
A. The die lands with a 3 on the top
B. The die lands with a 1, 2, 3, 4, or 5 on top
C. The die lands with a 6 on the bottom
D. The number of times the die lands with a 6 on top in n throws of the die
The correct answer is B. The die lands with a 1, 2, 3, 4, or 5 on top.