Final answer:
An AND gate with an inverter on its output is called a NAND gate, which outputs a low signal only when all its inputs are high.
This correct answer is d)
Step-by-step explanation:
An AND gate with an inverter on its output is known as a NAND gate. The correct answer to your question is d) NAND. A NAND gate is basically an AND gate followed by a NOT gate.
The output of the AND gate is high (1) only when all its inputs are high.
When you invert this output through a NOT gate, the result is a gate that gives a low output (0) only when all its inputs are high - otherwise, the output is high (1).
This correct answer is d)