<span>d. Both of my dogs are very gentle.
This sentence is in the correct form, grammatically. In subject-verb agreement, the words</span> several, few, both, many take the plural form of the verb.
Examples:
1. Several of the boys in the classroom have been playing all day long.
2. Few cats ate their meal.
3. Many buildings in town were burned.
Your answer will be A. Hope I helped!
Is it multiple choice? if so, what are the options? my best guess without options is a data base.
It emphasizes the decadence of the 1920s