The correct answer is B. Choosing a sound to focus on
Step-by-step explanation:
The word "listening" refers to the process of hearing sounds, understanding them and then remembering the information provided. In general terms, this process involves multiple steps including that guarantee the listener understand the information and after this is able to remember the information presented and answer to it. Additionally, this process always begins in the receiving stage in which there is a sound and the listener or receiver focuses on it while trying to interpret it or understand it. Therefore, the first step of listening is basically choosing a sound to focus on or begin the process of hearing a specific sound and trying to understand this as without a sound to focus other processed such as understanding and remembering cannot be carried out.