The correct option is
D ![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1423667/original_10-27.PNG)
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1423662/original_10-24.PNG)
In the above data, the marks obtained by the students are given. So it is a numerical data.
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1423663/original_10-25.PNG)
In the above data, grades obtained by the students are given, so it is not a numerical data.
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1423666/original_10-26.PNG)
In the above data, the number of employees working in a different organization are given, so it is a numerical data.
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1423667/original_10-27.PNG)
In the above data, the number of pairs available for different items are given, so it is a numerical data.
So except (b), all are numerical data.
Hence, options (a), (c) and (d) are correct.