Choosing the middle will ensure that any tabs you had opened the last time you used Chrome will load up when you return.
Here you will see the second entry ‘On Startup’ where you’ll see three options: start on new tab, resume previous session and open up specific pages. On Chrome, you need to go into menu (the three horizontal lines at the top right-hand corner) and scroll down to settings. (On a related note, pressing Ctrl + Shift + T reopens the last tab you’ve closed. All modern browsers allow this so here’s how to do it for each one. Instead of starting afresh and trying to find those pages in your history, you can set your browser so that it starts exactly where you left off.
If you have to close your browser and restart, you would usually have to go by memory or search your history to find those tabs again. TABS ARE INCREDIBLY handy to use but sometimes you can have so many open, you forget what exactly you had open.