Final answer:
The correct phrase for 'blue flower' in Spanish is 'flor azul'. In Spanish, adjectives agree in number and gender with the nouns they describe. 'Azul' remains the same regardless of the gender or number of the flower(s).
Step-by-step explanation:
In Spanish, adjectives agree in gender and number with the nouns they describe. The correct translation of the Spanish adjective for 'blue flower' is 'flor azul'. 'Azul' remains the same whether the noun it's describing is masculine or feminine, singular or plural. So, regardless of the number or gender of the flower(s), the word 'azul' stays the same. Hence, the correct phrase is 'flor azul'.
Learn more about Spanish Adjectives