Final answer:
Brooke has a total of 29 problems for homework. The property that best describes her situation is unknown.
Step-by-step explanation:
To find the total number of problems Brooke has for homework, we need to add the number of math problems, social studies problems, and science problems together. Brooke has 15 math problems, 5 social studies problems, and 9 science problems, so the total number of problems is 15 + 5 + 9 = 29. Therefore, the correct answer is option B) 29.
The property that best describes Brooke's situation is not mentioned in the question and requires additional information. Without that information, we cannot determine which property best describes Brooke's situation.