Janelle S. answered 09/24/20
Penn State Grad for ME, Math & Test Prep Tutoring (10+ yrs experience)
general definition of a derivative:
f(x) = at the point (3,
)
f'(3) = lim(h→0) [f(3+h) - f(3)] / h = lim(h→0) [√(3+h) - √(3)] / h
Your answer is B