Final answer:
Common external distractions that hinder concentration include noise pollution, visual disturbances, smartphones, environmental stressors like lighting and temperature, and the temptation to indulge in electronic communication during focus time.
Step-by-step explanation:
Common external distractions that can make it hard for someone to concentrate include various factors in one's physical and digital environment. Noise pollution, such as traffic sounds or loud conversations, can interrupt thought processes. Visual distractions like movement in one's peripheral vision, or a cluttered workspace, can pull attention away from the task at hand. In our digital age, electronic devices represent a significant source of distraction; this includes notifications from smartphones or other screens, as well as the temptation to check emails or social media during times designated for focused work. Furthermore, environmental stressors like uncomfortable seating, poor lighting, or extremes in temperature can also disrupt concentration. Being aware of interference from these sources and taking steps to minimize them is crucial for maintaining focus on academic or professional tasks.