Attentional Blink is a phenomenon characterized by the individual failing to detect a second visual stimulus that is presented milliseconds after the first stimulus

200 to 500 milliseconds

Explanation:

Attentional blink is a phenomenon that puts time-related limitations to the ability to utilize visual attention. When an individual must identify two visual stimuli presented one after another, the accuracy is very poor for the second stimulus if it occurs within 200 to 500 milliseconds of the first stimulus.

So, in our question, the gap is filled by 200 to 500 milliseconds.

the question isn't complete here so i can't right an answer '_'

b is the answer and if you need further with anything message me