Hydrogen bonds can be easily broken by which factors?

Hydrogen bonds, which are relatively weak interactions that occur between a hydrogen atom and an electronegative atom, can be easily disrupted under certain conditions. One primary factor that can break these bonds is heat, as increased thermal energy can provide enough kinetic energy to overcome the attractive forces holding the hydrogen bonds together. Similarly, water, which is highly polar and can form its own hydrogen bonds, can compete with existing hydrogen bonds, thereby facilitating their breakage.

In summary, the combination of heat and the presence of water can effectively weaken or break hydrogen bonds, making this choice the most accurate in the context of the question.