Question 3
A dog has 78 chromosomes and a human 46. What does this tell you?
The right answer is the one marked above.
Chromosome number is not a measure of complexity. A chromosome is a container. What matters is how many genes are on it and what they do, not how many separate threads the DNA is divided into.
What the table does show reliably is that the number is fixed for a species, always even, and exactly halved in the gametes.