This is the 1038th most frequent French word.
multiples
Several; numerous; diverse.
Here, 'multiples' is used as an adjective to describe the quantity (many) of books read for the project, emphasizing variety.
J'ai lu de multiples livres pour mon projet.
I have read multiple books for my project.
In this sentence, 'multiples' serves as an adjective to qualify the noun (challenges), indicating that the number and types of challenges were diverse.
Elle a affronté des défis multiples dans sa carrière.
She has faced multiple challenges in her career.
The word 'multiples' functions adjectivally here, stressing the diversity of colors present in the painting.