Explanation:
The Magic number 7 (plus or minus two) provides evidence for the capacity of short term memory. Most adults can store between 5 and 9 items in their short-term memory. This idea was put forward by Miller (1956) and he called it the magic number 7.
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Regular physical activity means that people will stay in shape as the body is working hard to keep you fit. This links to health promotion as your immune system gets stronger and you are able to prevent things as your blood cells are stronger. Disease prevention can be also a factor as the white blood cells are stronger which mean that there will be a less likely chance of catching a disease
Answer:
a bit like a band or ring under the microscope
Option A is the correct answer