From the words or group of words lettered A to D, choose the word or group of words that best completes each of the following sentences. All workers are exp...

Answer Details

The best option that completes the sentence is "to". This is because the word "answerable" means being responsible for something or being accountable to someone. In this context, it means that all workers are expected to be responsible or accountable to their bosses. Therefore, the most appropriate preposition to use here is "to", as it shows the direction of accountability.