<h2>Right answer:</h2><h3>a. la acera</h3><h3 />
Acera is a feminine and singular noun that translates into sidewalk ans is a a paved path for pedestrians at the side of a road. We use the definite article <em>la </em>because in Spanish definite articles must agree in both gender and number with the nouns they introduce. Therefore:
IN SPANISH:
<em>Los peatones caminan en </em><em>la acera</em>
IN ENGLISH:
<em>Pedestrians walk on</em><em> the sidewalk</em>
If your looking for the answer to be either hablarías/hablaría it is hablaría.
