HELP!!! Grades

<p>HI so i got my grades for 1st semester. I am a sophomore in high school. I'm worried that I won't be able to go to a UC. i volunteer and play a sport. My grades are:
Algebra 2 Honors- C
Spanish-B
AP Euro-B
AP Bio-C
English honors-B
Volleyball-A
I was wondering if I raise my grades to A's will that be better considering it's the final 2nd semester grades or will it still be bad?</p>