Which of the following is an example of positive feedback?
-abscisic acid (aba) in plants slows bud growth in cold temperatures.
-an increase in ethylene gas causes fruits to ripen more quickly.
-taking a tranquilizer slows the speed of signal transmission in neurons.
-panting in dogs increases the amount of cool air in nasal passages and lowers body temperature

the last option

Explanation:

it is an example of regulating the body's natural conditions

clinically, some people often have repeated allergies, eczema and respiratory infections or other parts of the infection, in this case, in addition to some routine tests such as tests for white blood cells, immunoglobulin series, lymphocyte subsets, etc., the five immune immunoglobulin tests are also necessary.