Final answer:
An excellent time to brainstorm about reaching target markets is during the process of developing a marketing strategy for a business.
Step-by-step explanation:
An excellent time to brainstorm about reaching target markets is when you are in the process of developing a marketing strategy for your business. This could be during the initial stages of starting a new business, launching a new product, or when you are considering expanding into new markets. By brainstorming about reaching target markets, you can generate new ideas and strategies to effectively communicate and connect with your intended audience.
Overall, brainstorming about reaching target markets is an important step in developing a successful marketing strategy that can help your business achieve its goals.