The question of probabilities takes into account the number of required outcomes over the number of total outcomes.
A look at the table shows that the intersection of front and window seats is at 8. That is the first figure on the second column indicates those who would prefer a fron seat by the window. Note that there is a total of 36 passengers.
Hence the probability that a passenger prefers to sit in the front of the plane and prefers a window seat is shown as
The correct answer is option D