During a fever, the body increases in temperature, which will affect internal chemical reactions by
increasing their activation energy, resulting in an increased reaction rate.
decreasing their activation energy, resulting in an increased reaction rate.
decreasing kinetic energy of the reactants, them overcome the activation energy.

increasing their activation energy, resulting in an increased reaction rate.

Explanation:

Heat is the total energy of molecular motion. If temperature rises, the total amount of energy in the system is higher due to this, molecules will move faster. If molecules move faster chemical reactions can happen at a faster rate. The reaction rate or rate of reaction is the speed at which reactants are converted into products the higher the energy in the system the frequently the atoms will collide hence speeding up reactions.

Well, a fever affects a cell's ability to carry out chemical reactions by increasing their activation energy, resulting in an increased reaction rate.

Explanation:

answer; polycythemia is the correct answer;