Answer:
Vesicle
Explanation:
A vesicle is a spherical organelle of a cell that looks like a sac. Vesicle can be used to move things inside cytosols such as enzyme, protein, or waste material. When vesicle carrying enzyme, its often called lysosomes. The vesicle can also dump material outside the cell by fusing with the cell membranes.
The best and most correct answer among the choices provided by your question is the first choice or letter A. <span>A biological agent that cannot reproduce on its own is a VIRUS.
</span>A virus<span> is a small infectious agent that replicates only inside the living cells of other organisms.
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The correct answer should be A. spores
Ferns don't have seeds and they reproduce using spores. Cones have seeds in them and seeds fall out. Pollen enters a flower and then the flower becomes a fruit. This is sexual reproduction of plants. Since ferns don't have this, they have to reproduce with spores.
