What are some steps that scientists can take in designing an experiment to avoid false negatives?

Not do the analysis by any means, no trials no issues, that is method for getting life.  

Further Explanation:  

false positive and false negative:

A bogus positive is the place you get a positive outcome for a test, when you ought to have gotten a negative outcomes. It's occasionally called a "false caution" or "false positive mistake." It's typically utilized in the restorative field, yet it can likewise apply to different fields (like programming testing).  

false negative rate:  

The bogus positive rate is equivalent to the criticalness level. ... Integrally, the false negative rate is the extent of positives which yield negative test results with the test, i.e., the contingent likelihood of a negative test outcome given that the condition being searched for is available.  

false negative in security:  

False Negatives. False negative is the term used to depict a system interruption gadget's powerlessness to identify genuine security occasions in specific situations. At the end of the day, pernicious movement isn't identified and cautioned.  

more terrible false positive or false negative:  

While a considerable lot of the present restorative tests are exact, false negative or positives do happen. ... A bogus pessimistic is a test outcome that demonstrates an individual does not have an infection or condition when the individual really has it, as indicated by the National Institute of Health (NIH).

Subject: biology

Level: High School

Keywords: false positive and false negative, false negative rate, false negative in security, more terrible false positive or false negative.  

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the sphincter muscles at the end of the digestive tract is the anus.

hey, i believe your answer would be d. sugar ribose and the base uracil. i believe this is the answer, because rna consists of sugar ribose, adenine, guanine, cytosine, and uracil.

your first option is incorrect, because that's dna. where it consists of sugar deoxyribose, adenine, guanine, cytosine and thymine.

your second option is also incorrect, this is because sugar deoxyribose is in dna, and uracil is in rna. these two do not make sense together.

your third option being incorrect, because sugar ribose is in rna, but not the base of thymine. rna consists of uracil, not thymine.

lastly your fourth option being correct! this answer is correct, because both sugar ribose, and the base uracil are in rna! ~

answer is d. sugar ribose and the base uracil.