These are the instructions to root any Android One Devices in a click using the Android One Toolkit on Windows Computer.
Requirements: Your android device should have at least 20-30 percent of the device battery to perform the rooting process.
(Developer Options is hidden for Android 4.2.2 and above, to display this option Go to Settings > About Phone > Built Number > Tap on it for 5-8 times).
Optional: You can also verify the root status of your device by using the Root Checker Application.
[*] Backup: Please take a backup of your essential data, as rooting may delete/wipe your data. Backup also help you to recover your data whenever anything wrong happens in the rooting process.
[*] How to Unroot: To unroot, Open SuperSU on your Device > Settings > Full Unroot.
[*] Support: Android One Toolkit is capable of rooting, unlocking the bootloader, and installing custom recovery (philz and TWRP) on all the android one devices, which includes Micromax Canvas A1, Karbonn Sparkle V, Spice Dream UNO, Cherry Mobile One, Symphony Roar A50, Nexian Journey One, Evercoss One X, Mito Impact, MyPhone Uno.
[*] Credits: The Android One Toolkit was created and distributed by anil293 (xda developer). So, full credit goes to him for sharing the tool for free.