Which programmer am I meant to upload with?

Development Tools IDE 1.x
1

I am having a lot of difficulty uploading bsic sketches.
My question is which programmer am I meant to be using???

Please click on
Tool > Programmer > and then which do I use???

what is the difference?

2

#2 AVRISP mkII is by default. You probably need this.

3

For normal uploads this option is ignored, it's only used for upload using programmer, and burn bootloader. For those tasks, you select the option corresponding to the hardware you're using