Final answer:
The community planted a total of 899 flowers in their garden. So, the correct answer is:a) 899
Step-by-step explanation:
To find the total number of flowers planted in the community garden, you need to multiply the number of rows of flowers by the number of flowers in each row. In this case, there are 29 rows of flowers, with 31 flowers in each row. So, the total number of flowers is 29 * 31 = 899. Therefore, the correct answer is a) 899.