For a virtual job interview on a video platform, Isabella set herself up in a local coffee shop. She was impeccably dressed, smiled, nodded, and made eye contact as best she could with everyone on$-$screen. She kept her tone polite and courteous, but she was unsure of herself since she had trouble hearing some interview questions. What change would have the biggest impact on Isabella's interviews going forward?

a more authoritative speaking voice

more casual, authentic dress

a quiet location

better eye contact with the camera