The correct answer is option 4, which means that all of the plants - banana, grape, and rose - can be propagated by vegetative methods.

Vegetative propagation is a method of plant reproduction that involves the use of vegetative parts such as stems, roots, or leaves. Unlike seed propagation, which involves sexual reproduction, vegetative propagation allows plants to produce offspring that are genetically identical to the parent plant.

Bananas are propagated by using suckers or shoots that grow from the base of the parent plant. These suckers can be detached and planted separately to grow new banana plants.

Grapes can be propagated by using cuttings from mature vines. These cuttings are taken from the branches of the parent plant and can be rooted to produce new grape plants.

Roses can also be propagated by taking cuttings from the stems of mature plants. These cuttings are then rooted to produce new rose plants.

In conclusion, all of the plants mentioned - banana, grape, and rose - can be propagated by vegetative methods, making option 4 the correct answer.