What is the correct answer of the given statements in the given order? I. Gate…

Concept

Digital electronics identifies components by how their output behaves as a function of inputs, or by how their storage/timing state is defined. Basic logic gates split into an AND-family, whose output depends on ALL inputs being high, and an OR-family, whose output depends on ANY input being high, with the NAND/NOR versions inverting those respective outputs. Storage units nest by powers of two: a bit is a single binary digit, a nibble is a group of 4 bits, and a byte is a group of 8 bits, so a nibble is exactly half of a byte. Flip-flops are classified by how their next output state is set: an S-R flip-flop uses separate set and reset control lines, a T flip-flop inverts (toggles) its previous stored state on each active trigger when its T input is held high, and a D flip-flop copies whatever value is present at its data input to the output at the trigger edge.

Application to This Question

1. Statement I describes a gate whose output is high only when every input is high, that is the defining behaviour of the AND gate.

2. Statement II describes a unit equal to half of a byte, since a byte is 8 bits and this half-unit is 4 bits, that unit is the nibble.

3. Statement III describes a flip-flop whose output simply follows (copies) the input at the trigger, that is the defining behaviour of the D flip-flop.

Cross-check

Checking each provided combination against these three identified terms, AND gate, nibble, and D flip-flop, only one listed combination carries all three terms together; every other combination substitutes at least one different gate, storage unit, or flip-flop type.

So the combination that satisfies all three statements in order is: AND gate, nibble, D flip-flop.