Your answer is true! The root of the word "retention" is retain, so basically customer retention means retaining customers, which also means having them return. Hope I helped!
The business plan is the blueprint for your business. If you wanted to build a house, you wouldn't walk over to an empty lot and just start nailing boards together. Starting a business without a business plan is just as risky.
hope this helps :)
Bring in new products or services, introduce deals and sales, help local charities