The answer would be 371 because it has multiple complete digits
<span>The student is incorrect because helium has 2 valence electrons and it's in group 18 because the first energy level is full. Although helium is placed in Group 18 which generally has 8 valence electrons, it does not have 8 valence electrons as the student suggested. It was grouped together with the noble gases because it exhibits similar properties with them. </span>
A catalyst speeds up the rate of reaction so the answer is B.
I think it might be A muscles help move nutrients through the body to the stomach
