Please explain 2c only

Let f(x) = (x + 1) In(x + 1). (a) Find the domain of the function. (b) Find the horizontal asymptotes of the function. (c) Where is there a potential vertical asymptote? What limit would you need to evaluate to determine if there is an asymptote here? (Note: we haven't seen the necessary tools to evaluate this limit algebraically.) Guess it's value by plugging in nearby values. You'll need a one-sided limit. (d) Find the r and y intercepts