Final answer:
31% of the tickets sold at a theme park were children tickets, so we need to calculate 31% of 350. The approximate number of children tickets sold is 108.
Step-by-step explanation:
To find the approximate number of children tickets sold, we need to calculate 31% of the total number of tickets sold. First, we need to find 31% of 350 by multiplying 350 by 0.31. The result is 108.5. Since we cannot have half a ticket, the approximate number of children tickets sold would be 108 tickets. Therefore, the correct answer is A) 108 children tickets.