Answer:
The correct answer is letter "D": George should only add images that will highlight the products.
Step-by-step explanation:
Grid formats are web pages designs that instead of portraying information display pictures arranged three by three (3x3) or four by three (4x3) grids so the web page user can select one of the images that is of interest and after clicking on it details of that subject will be on the screen.
In that case, as George is using a grid format for his father's shop website, he should only add images that after been clicked will bring u the content of the corresponding product.