Which combinations of inputs will definitely lead to a high output in a digital system?

In a digital system, the combination of inputs that leads to a high output often depends on the logical operations being performed and the characteristics of each input signal. The answer indicates that the combination of inputs C and D will definitely lead to a high output.

This suggests that inputs C and D have a specific relationship in the context of the system’s logic. If the system is designed such that the activation of both inputs C and D invariably results in a high output, this means they meet the necessary conditions for this outcome, potentially aligning with a function like an AND gate where both inputs must be high (or true) for the output to also be high.

In contrast, other combinations may not guarantee a high output due to the potential for one or more of the inputs not meeting the criteria for high output individually or in combination. Therefore, the robustness of the relationship between inputs C and D indicates that they are critical to achieving the desired output level effectively in this digital system.