The complement of event B includes all diamond cards with values greater than 2 that are not three.
The complement of event B, denoted as Bc, would be the set of all outcomes that do not satisfy the condition of event B.
In this case, event B is picking a card with a value of three.
Since there are no cards with a value of three among the diamonds greater than 2, the complement of B would be all the diamond cards with a value greater than 2 that are not three.
The complement of B is therefore the set of diamond cards with values greater than 2 that are either 4, 5, 6, 7, 8, 9, 10, J, Q, or K.