<h2><u>Answer:</u></h2><h2>b. The probability of choosing a blue marble is blue/total.The number of blue marbles is 6, and the total number of marbles is 16 (3 + 6 + 5 + 2 = 16).Therefore, the probability of choosing a blue marble is 16/16 = 3/8.</h2><h2><u>Thank you </u></h2><h2><u>sunshinemadison101</u></h2>