The correct option is
B ![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1387556/original_Untitled_drawing_-_2021-10-15T202812.551.jpg)
Let's discuss all the options one by one:
Option (a).
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1387552/original_Untitled_drawing_-_2021-10-15T202742.043.jpg)
In this graph, salary per month increases with time, which is not the given scenario.
Option (b).
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1387556/original_Untitled_drawing_-_2021-10-15T202812.551.jpg)
In this graph, salary per month remains constant with time.
Hence, This best represents the given scenario.
Option(c).
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1387557/original_Untitled_drawing_-_2021-10-15T202832.955.jpg)
In this graph, salary per month decreases with time, which is not the given scenario.
(d).
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1387559/original_Untitled_drawing_-_2021-10-15T202900.346.jpg)
In this graph, salary per month increases with time, but again it started decreasing, which is not the given scenario.
Hence, option (b.) is the correct one.