Final answer:
The correct answer is 'a. escuchando' as it means 'listening' in Spanish and fits the context of the sentence.
Step-by-step explanation:
The subject of this question is Spanish. The student is asking about the correct word to complete the sentence 'Sí, mamá, yo estoy ___ la radio.' The options given are 'a. escuchando', 'b. leyendo', and 'c. viniendo'.
The correct answer is a. escuchando, as it means 'listening' in English. This option makes sense in the context of the sentence, where the person is physically present and engaged with the radio by listening to it.
The other options 'b. leyendo' (reading) and 'c. viniendo' (coming) do not fit the context of interacting with a radio.
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