Answer:
Natural Selection
Explanation:
In all the three options namely Artificial Selection , Genetic Engineering and Gene Splicing there is involvement of human beings in gene modification. While in the case of natural selection genetic modification occurs through the evolutionary process through several hierarchical orders.
Eukaryotic cells are usually larger and more complex than prokaryotic cells, making your answer to this question D.
let me know if you have any further questions
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Long
ago, the microscope is not yet invented so people did not know about cells,
bacteria and other minute organism. With this, we can conclude that many
questions go unanswered and unasked because of the lack of technology. Moreover,
valuable invention has opened the mind of the people to become curious on what
is around and how life works in this world.