Concept:Logic gates are the basic electronic components used to perform Boolean functions.
Standard logic gates include AND, OR, NOT, NAND, NOR, XOR, and XNOR.
Explanation:The question asks which option is not a logic gate.
XOR means "exclusive OR" and is a valid logic gate.
OR is a standard logic gate that outputs true if any input is true.
AND is another standard logic gate that outputs true only when all inputs are true.
DOR does not match any known logic gate name used in digital electronics.
It is a made-up option included as a distractor.
Since the task is to select the invalid gate name, DOR is the answer.
Answer:D. DOR