Concept:In English, when multiple adjectives describe the same noun, they must follow a specific standard order.
Explanation:The usual order of adjectives is: opinion, size, age, shape, color, origin, material, and purpose.
Here, "brilliant" is an opinion adjective.
"Young" is an age adjective.
"Nigerian" is an origin adjective.
According to the correct order, opinion comes before age, and age comes before origin.
So the correct sequence is "brilliant young Nigerian."
Also, the adjective of origin, "Nigerian," should be placed closest to the noun "scientist."
This gives the phrase "brilliant young Nigerian scientist."
Among the options, only option A follows the correct adjective order.
Answer:A. brilliant young Nigerian