Final answer:
The Hebrews would have worn bright and vibrant colored garments when feeling festive, influenced by the art of Islamic Spain with colors like reds, greens, and yellows. The correct choice will be A.
Step-by-step explanation:
When Hebrews were feeling festive, they would have likely worn garments of bright and vibrant colors. This can be understood through art historical analysis, which suggests that there was an influence from the art of Islamic Spain. This influence might have included the use of vivid colors such as reds, greens, and yellows, which would have made their attire stand out during celebrations and festive occasions. Hence the correct answer is C.