Scientists' study of cat DNA shows that... Tamed cats have always existed on nearly every continent. Wild cats were forcibly domesticated by humans. Wild cats were brought from Europe to the Middle East. There were two great movements of tamed cats.

The best option is letter D. There were two great movements of tamed cats.

Explanation:

After conducting studies on cat DNA, researchers have come to a few conclusions. First, cats and humans most likely approached each other when farming started in the Near East. Cats would come to the farms to hunt the mice attracted to grain stores. That was the first great movement. The second one happened a long time later in Egypt. Evidence from the DNA suggests cats spread to almost all continents, starting with Europe, during the Roman Empire.

not concrete, existing in thought or as an idea but not having a physical or concrete existence