Final answer:
To figure out how many pipe cleaners each girl would get, Gina can divide the total number of pipe cleaners (74) by the number of friends (7), which is option B.
Step-by-step explanation:
To figure out how many pipe cleaners each girl would get, Gina can divide the total number of pipe cleaners (74) by the number of friends (7). This means she can think of 74 divided by 7, which is option B. By dividing 74 by 7, Gina can find out that each girl would get approximately 10 pipe cleaners for their art project. This division method allows for fair distribution, enabling each girl to have an equal share of pipe cleaners for their collective art project, promoting an equitable and efficient resource allocation.