So the answer is (a) because in English the word is “paid” and (b) and (c) just don’t make sense the sentence states that “I (paid) the ring at the jewelry store.” I hope this helps!
Answer: La mujer esta <em>comiendo</em>.
La niña esta <em>caminando.</em>
Los policias estan <em>manejando</em>.
Yo estoy <em>escribiendo</em>.
Los gatos estan <em>dormidos.</em>
Explanation: Basically just changing the statement to past-tense.
Large and Pretty! Hope I helped Amigo!
Estudian (present)
Estudiaron (past)