developer.android.com-site
https://developer.android.com/index.html

Moving-Android-Studio-and-Android-Emulator-to-64-bit-versions
https://android-developers.googleblog.com/2019/06/moving-android-studio-and-android.html

Android-Studio
https://developer.android.com/studio/index.html

Install-Android-Studio-page
https://developer.android.com/studio/install.html

BIOS-1
http://cdn.sysprobs.com/wp-content/uploads/2009/10/virt_bios.gif

BIOS-2
https://www.thomas-krenn.com/de/wikiDE/images/c/ce/X7DBE-bios-intel-vt.png

BIOS-3
http://i.stack.imgur.com/ttR1U.png

BIOS-4
http://cdn.overclock.net/1/17/350x700px-LL-17c1a70b_VT-D.jpeg

If-VT-x-virtualization-technology-is-locked-or-disabled-on-your-Mac
https://support.apple.com/en-gb/HT203296