What is the value of the sum of the series 1 + x + x^2 + x^3 + ...?
Correct: A
The given series is a geometric series, which has the form 1 + x + x^2 + x^3 + ... . The sum of an infinite geometric series is given by the formula S = 1/(1 - x), provided that |x| < 1. If |x| >= 1, the series diverges.