when installing android sdk what items must I choose? To save disk space.
If you are at the situation where you need to save this amount of disk space then general development will push you over the edge anyway. I suggest you purchase a backup drive and start moving things.
As for API, you only need the version relevant for your current project’s oldest (lowest supported) OS that’s still supported by Unity.
Tools and Extras do you need to select all the items? And Api do you need to select all the items?
Tools and Extras do you need to select all the items? And Api do you need to select all the items?