A strict link between variables with a time sequence; heating water to 100°C causes it to boil.

A strict link between variables with a time sequence; heating water to 100°C causes it to boil.

• A. Causation
• B. Correlation
• C. Identity
• D. Consensus

Answer: (A)

This question centers on causation—the idea that one variable directly brings about a change in another, with a clear sequence in time. Heating water to 100°C supplies energy that changes the water’s state, so boiling occurs after the heating reaches that temperature. The link isn’t just an association; there’s a physical mechanism (energy input leading to a phase change) and a definite time order ( heating before boiling ). It’s not about identity (100°C isn’t the same thing as boiling) and it isn’t about agreement or consensus.

This question centers on causation—the idea that one variable directly brings about a change in another, with a clear sequence in time. Heating water to 100°C supplies energy that changes the water’s state, so boiling occurs after the heating reaches that temperature. The link isn’t just an association; there’s a physical mechanism (energy input leading to a phase change) and a definite time order ( heating before boiling ). It’s not about identity (100°C isn’t the same thing as boiling) and it isn’t about agreement or consensus.