Answer:
In the zone
Explanation:
Rinaldo is working on a financial analysis of a potential acquisition. It has taken three days of concentrated effort. Jeff stops by to ask for advice. Rinaldo says he can’t break his concentration just then. Rinaldo is in the Zone.
In the Zone: It is an informal expression used to define state of mind of a person to show how much involved he is or she is into the activity, which he/ she is doing. Person is in the zone as he/she love to do what he is doing. Generally, person is either happy or excited to be in the zone as the activity is matching his/her skill or talent. People more focused and determined at this state of mind.
In the given case, Rinaldo is also in the of zone as he does not want to break his concentration from working on a financial analysis of a potential acquisition.
