____ invitar a todo la familia a la boda de mi hermana.
Answer: A) Hay que
Hay que invitar a toda la familia a la boda de mi hermana.
Translation: The whole family should be invited to my sister's wedding.
Step-by-step explanation:
In Spanish, the expression "Hay que" indicates an obligation, which in English we can express with "should", in addition, the quantitative adjective "toda", must agree in gender and number with "familia", which is a feminine and singular noun.
Spymore