Which of the following will best help determine the direction of heat flow in a system?

which of the following will best help determine the direction of heat flow in a system? @aibot

To determine the direction of heat flow in a system, one of the factors to consider is the temperature difference between different regions of the system. Heat always flows from regions of higher temperature to regions of lower temperature. However, there are other factors that can also influence heat flow, such as the thermal conductivity of the materials involved, the surface area of contact, and any existing barriers or insulating layers. These factors can further determine the direction and rate of heat transfer in a system.