Every profession has a range of salaries that practitioners in that profession might earn from the lowest salary possible to the highest. For instance, Carpenters in the United States can expect a yearly salary of between $41,784 and $72,987.
The Median figure refers to the figure in the middle of this range and separates what those in the upper half of the range will get from those in the lower half. It is not a given that a person will earn the median salary as they may earn lower or higher than it depending on multiple factors such as education, location, additional skills, number of years in the profession, etc.
I think a or d because if you take out the commas on a u get yes you may read one more chapter which is correct also the comma in d indicates a pause which is also right
