I am a current undergrad at a top 5 (think HYPMS) university. I did not do so well in multivariate calculus and linear algebra (think B/B+), so I am thinking of taking a course at a UC this summer for remediation. Unfortunately, due to COVID, it seems everyone got the same idea, leaving it impossible to register for a course at UCLA/UCB. This leaves me with options at these schools:

UCSC:
Linear Algebra

UCI:
Multivariable

UCR:
Multivariable
Linear Algebra

I Was wondering if taking any of these courses would help remediate my ****** grade and at least show I am competent in these subjects. I do plan on taking harder courses next year at my school, and hopefully I'll do well. However, I was wondering if the quality of these schools should impact my decision in which school(s) I choose (I can choose multiple thanks to remote instruction), and which school I should choose.