The correct option is
D Model D
To find the grid model representing the final value as 0.54, we need to observe the value represented by each model.
Calculating Model A, we get:
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1204286/original_Screenshot_2021-06-26_at_3.41.05_AM.png)
So, 0.6
× 0.8 = 0.48
∴ Model A represents the value 0.48.
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1204291/original_Screenshot_2021-06-26_at_4.07.38_AM.png)
Calculating Model B, we get:
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1204287/original_Screenshot_2021-06-26_at_3.48.26_AM.png)
So, 0.4
× 0.5 = 0.20
∴ Model B represents the value 0.20.
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1204292/original_Screenshot_2021-06-26_at_4.09.03_AM.png)
Calculating Model C, we get:
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1204288/original_Screenshot_2021-06-26_at_3.55.38_AM.png)
So, 0.6
× 0.5 = 0.30
∴ Model C represents the value 0.30.
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1204293/original_Screenshot_2021-06-26_at_4.10.00_AM.png)
Finally, calculating Model D, we get:
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1204289/original_Screenshot_2021-06-26_at_4.01.16_AM.png)
So, 0.6
× 0.9 = 0.54
∴ Model D represents the value 0.54.
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1204294/original_Screenshot_2021-06-26_at_4.10.52_AM.png)
Hence, the only model that represents the final value 0.54 is Model D.