The characteristics of the combinational circuits are: A. Output at any time…

Answer: A and C only ("Output at any time is function of inputs at that time" and "Do not have feedback paths").

Explanation:

• Output depends only on current inputs: True. In a combinational circuit, the output value at any time is a pure function of the present input values; there is no storage of past inputs.

• Contains memory elements: False. Memory elements (flip-flops, latches) store state and are a defining feature of sequential circuits, not combinational ones.

• Do not have feedback paths: True. Feedback paths can introduce storage or state; pure combinational logic is implemented without feedback loops so outputs remain a direct function of current inputs.

• Clock is used to trigger the circuits to obtain outputs: False. Clocks are used in sequential circuits to synchronize state changes; combinational circuits do not require a clock to produce outputs.

Conclusion: The correct characteristics are that outputs are functions only of current inputs and that there are no feedback paths; therefore the correct choice lists those two statements.