There are several principles behind in scientific explanations, including , which refers to using the fewest number of assumptions to reach a solution, , which refers to using falsifying methods to test hypotheses, and , which refers to whether the explanation can be verified or lead to specific predictions.

1.  parsimonious,

2.  rigorously

3.  evaluated

Explanation:

There are several principles behind in scientific explanations, including PARSIMONIOUS, which refers to using the fewest number of assumptions to reach a solution, RIGOROUSLY which refers to using falsifying methods to test hypotheses, and EVALUATED, which refers to whether the explanation can be verified or lead to specific predictions.

Hence, the correct answers are: PARSIMONIOUS, RIGOROUSLY and EVALUATED

i am pretty sure it is d.

explanation:

allergens: overstimulate the nerve system

neurotics: attack nerve cells

mutagens: damage or otherwise alter dna sequence

generators: cause defects during growth and development  

carcinogens: cause unchecked cell growth

i hope you get the idea according to me these are the effects that happened.