Which of the following tools would help you measure how long it takes to perform an activity?

Service blueprint

Flowchart

Time study

Work sampling

$10$

$1$ point

Suppose I wanted to estimate the satisfaction of drive$-$thru customers at McDonalds. To do this, I randomly poll $10$ customers per day and use the average across these transactions as my estimate. Which of the following would best describe this method?

Service blueprinting

Flowcharting

Work sampling

Time study