Answer is A
Firstly axon must reach the threshold level and then depolarisation occurs. Depolarisation phrase means sodium enters and potassium leaves the axon . Choice C can't be because main idea is the entering of sodium ions.
It spread by person to person
Answer:
A
Explanation:
Inattentional blindness simply refer to failure to see objects staring at our faces or directly facing us, when our mind is focused directly on another object.Thus because Preet's attention was watching for the cars, her attention was diverted with her gave on the cars that she was oblivious of the two menshe bumped into. This is an example of Intentional blindness.
it may be caused by how attractive or conspicuous the object at focus is,if ths object is attracive the person will be oblivious of other objects around.
the degree of expectation of the individual focusing on the object,How expectant the person is to see the objects will catch the attention why negating others.
The extent of concentration of the individual to focus on the object that is the amount of mental work load on the brain during focus, will make the particular stimulus to gain attention of the brain , neglecting others.
