In humans, detached earlobes are dominant over attached earlobes. Do a
Punnett Square between 2 heterozygous people with detached earlobes. Give
the genotypic and phenotypic percentages of the offspring.
Please Help

The Punnet Square would be:

With E being detached earlobes and e being attached earlobes

EE, Ee, Ee, ee

So they would have a 75% chance of a child with detached earlobes and a 25% chance of a child with attached earlobes— If both parents are heterozygous.

b is the best answer for this question.

the answer is d. chordata