This is the sun and the celestial objects bound to it by gravity. this includes the eight planets and their 166 known moons, four dwarf planets, and billions of small bodies, including asteroids, comets, meteoroids, and interplanetary dust.

The correct answer to this question would be c

The answer to this will be from your lab notes/procedure. it would be best to ask another student who participated in the lab as we do not know what was done, what enzyme or if the temperature is celsius or fahrenheit. if i were to guess though i'd say the rate stopped due to enzyme denturing at high temperature

Yes yes yes very good