According to a survey, the probability that a randomly selected worker primarily drives a van to work is 0.853. The probability that a randomly selected worker primarily takes public transportation to work is 0.056. Complet (a) through (d). (a) What is the probability that a randomly selected worker primarily drives a van or takes public transportation to work? P(worker drives a van or takes public transportation to work) = (Type an integer or decimal rounded to three decimal places as needed.)