Answer:
A
Explanation:
Options B,C, and D wouldn't work because they include multi-cellular organisms. These organisms are fungi, plants, and animals that have billions of cells within them. Thus, the most probable answer would be A since many bacteria are single celled.
Hope this helped :)
The microscopic represent the single-celled organism i.e. not well defined also it is the membrane-bound nucleus that best fits the two kingdoms i.e. Option A. Archaebacteria and Eubacteria
A microscopic i.e. single-celled organism also it is not well defined, moreover, it is membrane-bound nucleus would fit best for option A. Options B, C, and D should not be considered because they involved multi-cellular organisms. These organisms could be fungi, plants, and animals that have billions of cells within them.
learn more about the cell here: https://brainly.com/question/25074336
