The answer to this question is the Snellen chart that will be used by the nurse to test the vision of the low income women. A Snellen chart is an eye chart used to measure the vision of the patients. Snellen charts should be placed at least 2.8 meters from the patient to test its visual acuity. This chart was developed by Herman Snellen.
Answer:
The first source is less credible
Explanation:
The first source is less credible because it is from wikipedia and it is an html. Most trusted sources are edu, .org, etc.
Microorganisms that are similar to bacteria in size and simplicity of structure but radically different in molecular organization. They are now believed to constitute an ancient intermediate group between the bacteria and eukaryotes.
So from your choices most likely it will be A) ancient bacteria :)