What's "make sense" mean?

Native speaker’s answer
Rebecca
"Make sense" means to have a clear meaning, to be easy to understand, or reasonable. So, here, "make sense" means to fully understand and have a clear meaning of something. Ex: Leaving early makes sense since we don't want to miss the flight. Ex: I'll never be able to make sense of her. = I'll never be able to understand her. Ex: I made sense of it all by journaling. = I understood it clearly through journaling.