Final answer:
The word 'are' in the sentence 'My grandparents are doctors' would be conjugated as 'son' in Spanish, which is the form of the verb ser (to be) used for plural subjects.
Step-by-step explanation:
The word 'are' in the sentence 'My grandparents are doctors' would be conjugated as 'son' in Spanish, which is the form of the verb ser (to be) used for plural subjects. Ser is used to express permanent qualities or characteristics, such as professions. For temporary or changing states, we use the verb estar (to be). For example, if we wanted to say that they are currently at the hospital, we would use the verb estar and say 'Mis abuelos están en el hospital.'
Learn more about Ser vs Estar in Spanish