Which option completes the text below correctly?

There are different opinions on how water you should be drinking every day.

Health authorities commonly recommend eight 8-ounce glasses, which equals about 2 liters, or half a gallon. This is called the 8x8 rule and is very easy to remember.

However, health gurus believe that you need to sip on water constantly throughout the day, even when you're not thirsty.

As with most things, this depends on lhe individual. factors (both internai and external) ultimately affect your need for water.

(https://www.healthline.com)