This is an ignorant statement that is 100% untrue. Fluids are much more important to the body and required in greater quantity than food.
A person can go for 30 days without food. Try going for 30 days without any fluids, primarily water, you won't be alive at the end of 30 days.
James, this is a language-learning exercise, not a course in physiology. It is not important whether the statements here are true or false.
If they are false, then an accurate translation of them will also be false -- but it is the accuracy of the translation, not the statement, that matters.
Besides, we do not know the context for this statement. This may be, for example, something that a restaurateur is saying to his employees. He has found that his customers care more about the food that is served than the drink.