The main advantage of vegetative propagation is that it produces genetically uniform progeny (clones). Since vegetative reproduction uses somatic cells through mitosis (not meiosis), offspring are genetically identical to the parent plant. This is crucial for maintaining desirable traits in horticulture and agriculture - when a plant has excellent characteristics (fruit quality, disease resistance, yield), vegetative propagation preserves those exact qualities. While vegetative propagation can produce healthy plants, disease resistance is not guaranteed - vegetative parts can actually transmit diseases from the parent plant. Options A and B are subjective judgments, not biological principles.