In which situation can the result of digital voting or a survey be biased?

Correct answer: When responses are collected only from people with internet access and other groups are excluded

The governing concept is sampling or selection bias. If a digital survey includes only people who have internet access, people without devices, connectivity, or digital skills are excluded. Their views may differ, so the sample cannot fairly represent the whole population. Therefore, option A is correct. Equal opportunity, clear questions, and secure recording improve survey quality but do not themselves create this bias.