21. You conduct a single-cell recording study of a lateral prefrontal cortical cell while an animal performs a delayed-response task. Which of the following response profiles best matches the behavior of the cell if it is primarily involved in working memory function? (Each vertical line represents an action potential.) The image contains a series of three line graphs with the following elements:1. **Graph Components**: - Each graph includes a timeline with three labeled sections: "Cue," "Delay," and "Response." - Vertical lines scattered along the timeline represent different events or actions occurring over time.2. **First Graph**: - The "Cue" section is marked by a black bar indicating the timing of a cue event. - The "Delay" phase follows, during which a number of evenly spaced vertical lines occur, suggesting repeated or sustained events during this period. - The "Response" is indicated by a large upward arrow, suggesting an action or change occurring at the end.3. **Second Graph**: - Similar structure to the first graph. - The "Cue" is again marked by a black bar. - During the "Delay," fewer vertical lines are present, depicting fewer events or activities compared to the first graph. - The "Response" period is again marked by a prominent arrow.4. **Third Graph**: - Maintains the same timeline structure. - The "Cue" section is indicated with a black bar. - The "Delay" period has a higher density of vertical lines, suggesting more frequent events. - A prominent arrow indicates the "Response."5. **Fourth Graph**: - Similar timeline with sections "Cue," "Delay," and "Response." - The "Cue" section has fewer vertical lines in the "Delay" period as compared to previous graphs. - The "Response" is marked by an arrow, similar to previous graphs.This sequence of graphs appears to illustrate variations in the timing and frequency of events following a cue, leading up to a response phase. This type of diagram might be used in psychological or neurological studies to depict response patterns.

Introduction:- Action potential is a fleeting reversal of the membrane potential, caused by changes in permeability of the plasma membrane of neuron to potassium and sodium ions causing an electrical impulses to be transmitted along the axon.Answer. last is correct response profiles best matches the behavior of the cell if it is primarily involved in working memory function.