human
Question: Melissa is creating a new product to quench people's thirst. She thinks it will be more popular if it is less flat. She decides to

Choices:
A) add more salt to the drink
B) add some dissolved carbon dioxide
C) shake up the drink bottles before shipping them to the stores
D) boil the drink in a large vat
gpt
The correct answer is 1: add some dissolved carbon dioxide.