A teen has been asked to carry some boxes of books to a classroom.
He stoops over and pulls a box upward
toward his chest. Should he continue
lifting this way?

No, he shouldn't continue lifting this way. When you're lifting something, you need to use proper body mechanics. With the way he stooped over to pick up the box, he has a high chance of injuring his back; you shouldn't bend at your waist when picking something up. Also, you should hold the object close to your body at your waist level. In this case, he should stand with his feet shoulder-width apart, he should bend at his knees instead of his waist, and he should be in a squat-like position when picking up the box.

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.