Final answer:
The correct plural forms of the adjective 'potens, potentis' in the nominative case are 'potentes' for masculine and feminine, and 'potentia' for neuter, with 'potentium' being the genitive plural for all genders. So, the answer is 1) potentes, potentium.
Step-by-step explanation:
The plural form of the Latin adjective potens, potentis (meaning powerful) varies depending on the case, gender, and number it is being used with. We need to focus on the nominative case, which is used for the subject of the sentence. The nominative plural form for masculine and feminine is potentes, and for neuter, it is potentia. The genitive plural for all genders, which indicates possession, is potentium. Therefore, the correct answer to the question is potentes, potentium for the nominative and genitive plural respectively. This indicates that the correct choice from the given options would be 1) potentes, potentium.