Yes, it's #2, there is no taxable income in your return.
$2400 of reportable income is quickly wiped out by your $14,600 standard deduction. Why are you even filing a tax return, with only $2400 of income?
Full time students, under age 24, usually still qualify to be a dependent of their parent. The lifetime Learning Credit would be worth $2000 to someone who can claim you as a dependent, but worth $0 to you.
You say you have not been a dependent for multiple years? Who claimed the refundable credit during your undergrad years?
A full time unmarried student, under age 24, even if you don't qualify as a dependent, is only eligible for the refundable portion of the American Opportunity Credit if he supports himself by working. You cannot be supporting yourself on parental support, 529 plans or student loans & grants. It is usually best if the parent claims that credit.
You cannot claim the (up to) $1000 refundable credit if you are, or can be, claimed as a dependent by someone else.
Reference: Line 7 instructions for form 8863.
https://www.irs.gov/instructions/i8863#en_US_2024_publink53002gd0e674
