Final answer:
The function described by the truth table is the OR function.
Step-by-step explanation:
The function described by the given truth table is OR.
The OR function returns true if at least one of the inputs is true. In the given truth table, whenever there is a 1 in at least one of the input columns (A or B), the output column (Y) is also 1. On the other hand, when both inputs are 0, the output is 0.