How to turn off the auto-capitalization tool on your Android's Gboard keyboard

Android users can disable auto-correction features like capitalizationon their Gboard keyboards.
Crystal Cox/Business Insider
The on-screen keyboards of Android devices will capitalize the first letter of a sentence by default thanks to a built-in "Text correction" tool. 
Gboard, the default keyboard app for Android devices, allows you to change this feature through the gear icon located at the top of the keyboard.  
To turn off auto-capitalization on an Android device's Gboard k