A development plan is like a map that grown-ups make to help them achieve their goals. Just like when we plan to go on an adventure, there needs to be a plan to actually make sure we get there.
So, let's say we want to become an astronaut when we grow up, we would need a development plan to make sure we achieve that goal. The development plan would be like a list of things that we need to learn and do to become an astronaut.
For example, we would need to study a lot about space and science, learn how to operate all the equipment in a spaceship, and practice being in zero gravity. The plan would include all the steps we need to take to achieve our goal of becoming an astronaut.
Sometimes, the development plan might take a long time to accomplish. But, we just need to be patient, work hard, and keep following the plan. And, after all the hard work, we could finally achieve our goal and become an astronaut!