Which is the most efficient way to avoid dna mutations from uv radiation?
avoid getting x-rays at the doctor’s office.
avoid protective shields during x-rays.
avoid uv radiation by wearing sunscreen.
avoid uv radiation by using a tanning bed.

Sunscreen is the best, and most efficient way to avoid DNA mutations. UV radiation causes thymine dimers in the DNA complex, so limiting UV radiation is key to avoiding DNA mutations.
X-rays are not good for you, but they are usually necessary.
Avoiding protective shields would increase the damage done by x-rays.
Using a tanning bed would also increase UV radiation damage. 

The scientific method is a series of steps followed by scientific investigators to answer specific questions about the natural world. it involves making observations, formulating a hypothesis, and conducting scientific experiments.the steps of the scientific method are •observation-the first step of the scientific method involves making an observation about something that interests you•question-once you've made your observation, you must formulate a question about what you have observed. •hypothesis-once you've made your observation, you must formulate a question about what you have observed. •experiment-once you've developed a hypothesis, you must design and conduct an experiment that will test it.•results-the results are where you report what happened in the experiment. •conclusion-the final step of the scientific method is developing a conclusion.i hope that this you : )