"Ụmụ nwoke na-agba ọsọ." Kedu n'ime okwu a bụ isiokwu?

In the sentence "Umu nwoke na-agba oso," the question asks which word or phrase is the subject (isiokwu). The subject of a sentence is the person, thing, or group performing the action.

The subject is Umu nwoke (boys/young men). This noun phrase refers to the group of males who are performing the action of running. "Umu" is a plural marker (children of/group of) and "nwoke" means "man/male," so together "umu nwoke" means "boys" or "young men." They are the ones running, making them the subject of the sentence.

The other options are parts of the sentence but not the subject: "Nwoke" (man) alone is only part of the full subject phrase - it would refer to a single man, but the sentence is about a group (umu nwoke). "Na-agba" (are running/are doing) is the verb phrase showing the ongoing action. "Oso" (race/run) is the complement of the verb, completing the meaning of "agba." Together "na-agba oso" means "are running."

Exam tip: When identifying the subject, look for the complete noun phrase that performs the action, not just a single word extracted from it.