<h2>Answer : Option B) Heat flows from the hand to the ice-cream.</h2><h3>Explanation : </h3>
The thermal energy flow would require a source to get transferred to an object which has less thermal energy than the source. Here, the energy source is a person and the object is ice-cream. The source of thermal energy will be in a person and the energy will flow from the hand of the person to the ice-cream as there is low thermal energy in ice-cream.
A barometer is an instrument used to measure air pressure and track weather systems. The most common unit of measurement used in barometers is the millibar (mb).
