Which of the following statements correctly defines continuity at a point c?

Calculate the limit of f(x) = |x|/x as x approaches 0 from both sides. Is the function continuous at x = 0?

Using a visual tracing tool, how can you determine if a function is continuous at x = 3?

Which type of discontinuity is characterized by a sudden change in the function's value, often seen in piecewise functions?

For the function f(x) = (x^2 - 16)/(x - 4), find the x-value where the function is discontinuous.