Which of the following is a minimum set of desired amounts that covers the equivalence partitions for an unattended gasoline pump?

To determine the minimum set of desired amounts that effectively covers the equivalence partitions for an unattended gasoline pump, it is important to consider the possible input ranges and the validity of those inputs.

In this case, the relevant partitions might include invalid inputs such as negative values and zero, as well as valid inputs which can be categorized into lower and upper limits. The ideal amounts to test will include a zero amount (to check the boundary condition of not being able to dispense any fuel), a minimal positive amount (e.g., 0.1, which is the smallest valid positive input), and a mid-range amount that reflects typical user behavior, like 50.0.

Choosing the amounts of 0.0 and 0.1 allows us to test both the lower boundary and the smallest valid transaction, while the amount of 50.0 ensures we are also addressing normal operational expectations of the pump. This selection adequately spans the required equivalence partitions by featuring critical boundary values and reflecting realistic user behavior.

The other options either include unnecessary values or do not fulfill the requirements for thorough equivalence partitioning. For example, very high amounts or negative values, while testing boundaries, may be valid in some contexts but are not essential when focusing on minimum representative