Topic: verb (ক্রিয়া),

Best Answer Explained in Below-:

In the sentence "We should obey the laws," the verb "obey" functions as a principal verb. A principal verb is the main verb in a clause that conveys the primary action or state of being, while non-finite verbs, such as infinitives or gerunds, do not convey a complete action independently.

In this case, "obey" is in its base form, functioning as the main action of the sentence. The word "should" is an auxiliary or modal verb that modifies "obey" by indicating necessity or obligation. The structure of the clause suggests that "obey" is essential to the sentence's meaning, as it specifies what action the subject "we" must take concerning "the laws."

Finite verbs, in contrast, are those that are limited by tense, number, or person. "Obey," here, is used in a context where it directly conveys action, hence reinforcing its role as the principal verb. Therefore, the correct classification of "obey" in this context is indeed A) Principal.