Answer:
B, C, E
Explanation:
Informal learning is done through experience, or other methods of non-standard material. With informal learning, the learning decides if/when they are complete rather than an instructor or test score.
Let's dissect the answer choices:
A - "a nursing assistant taking an online class on ethics" This is formal learning because it is done through an educational class.
The <em>class</em> decides when the nurse has accomplished this skill.
This is not an answer
B - "a nurse practicing administering vaccinations on a dummy arm" This is informal learning because it is done alone, and through experience.
The <em>nurse</em> decides when they have accomplished this skill.
This is an answer
C - "a resident shadowing a doctor for a day in the emergency room" This is informal learning because it happens out of a brick-and-mortor educational building.
The <em>resident</em><em> </em>decides if they have accomplished this skill.
This is an answer
D - "a nursing assistant the state exam to become qualified" This is formal learning because it is done through official testing.
The <em>test</em><em> </em>decides if the nursing assistant has accomplished this skill.
This is not an answer
E - "a nursing assistant who observes a coworker communicating effectively with a patient's mother" This is informal learning because it is done through observation.
The <em>nursing</em><em> </em><em>assistant</em><em> </em>describes if they have accomplished this skill.
This is an answer