__ is a state of equilibrium, in which biologica conditions (such as body temperature) are maintained at optimal levels. A resting potential B homeostasis C reuptake D synergy

## Step 1<br />The question is asking for the term that describes a state of equilibrium where biological conditions, such as body temperature, are maintained at optimal levels. Let's analyze each option:<br /><br />## Step 2<br />(A) Resting potential: This term refers to the electrical potential of a neuron when it is not being stimulated. It does not describe a state of equilibrium in biological conditions.<br /><br />## Step 3<br />(B) Homeostasis: This term refers to the ability of an organism to maintain a constant internal environment despite changes in external conditions. This includes maintaining body temperature, pH, and other vital conditions. This term fits the description given in the question.<br /><br />## Step 4<br />(C) Reuptake: This term refers to the process by which neurotransmitters are taken back into the neuron that released them. This process is not related to maintaining equilibrium in biological conditions.<br /><br />## Step 5<br />(D) Synergy: This term refers to the interaction or cooperation of two or more agents to produce a combined effect greater than the sum of their separate effects. This term does not describe a state of equilibrium in biological conditions.