Answer:
The probability of drawing a green marble from the jar is 5/7, since there are 5 green marbles out of a total of 7 marbles.
Since the marbles are replaced after each draw, the probability of drawing 4 green marbles in a row is (5/7) * (5/7) * (5/7) * (5/7) = 625/2401.
Therefore, the probability of selecting 4 green marbles is 625/2401.