Final answer:
The condition that needs to be met for water absorption to be considered 'greater than 7' specifically relates to the water's pH level, which must be above 7, indicating it is alkaline. This affects the water's absorption properties in various contexts. Other conditions such as temperature and pressure do not apply to a 'greater than 7' criterion regarding absorption.
Step-by-step explanation:
To understand water absorption and the conditions in which it is greater, we must consider factors like pH, temperature, and solute concentration. Condition 2) Water pH should be above 7 is the correct condition for water absorption to be greater than 7 if we are talking about the pH level. This is because a pH above 7 indicates a basic or alkaline solution, where there is a greater concentration of hydroxide ions (OH-) than hydronium ions (H3O+).
In terms of water temperature for optimal absorption in the human body, or how it affects absorption in general, neither of the provided temperature conditions explicitly ensure greater water absorption. However, extreme temperatures can affect the state of water and its capacity for solutes, which in turn can affect absorption properties (though not in the context of comparing a condition 'greater than 7').
As for water pressure, it has more to do with the boiling point of water rather than its absorption. While high pressure can influence boiling temperature, it isn't related to water's absorption in the human body or other mediums solely based on the 'greater than 7' condition.