Choose the most suitable one word for the following phrase. Shining, brilliant and magnificent

Solution:

Resplendent is the correct word.
The phrase "resplendent" refers to something that is appealing and stunning because it is highly coloured or sumptuous, that is, bright and brilliant. For example, "she was resplendent in a sea-green dress". As a result, Option 3 is right. Luminous means emitting light; brilliant or shining; gleaming means (of a smooth surface) reflecting light, typically because it is highly clean or polished; polished means shiny as a result of being rubbed. These selections are inappropriate because they do not express the required meaning.