Measuring the bone in isolation, is the most accurate way to describe a persons actual height.

The answer is the Femur. Femur is the accurate bone that you can measure because for the simple reason the femur is a part of the leg, it plays a biggest role in determining or measuring the height of the person. And also femur has the largest leg bone and it contributes best to the height of the individual.

so we know the answer cannot be c because no insect or animal starts as an adult

the answer is a. a swimming larvae

because since they are sea animals they automatticaly have to know how to swim they cannot just sink to the bottom

sorry if this is the incorrect answer.