What can be a common reason for rural to urban migration?

Correct answer: Jobs and better facilities

Direct answer: Option B. Rural-to-urban migration means people move from villages or rural areas to towns and cities. A common reason is the search for employment, education, healthcare, transport and other facilities. These are opportunities or attractions that may be greater in urban areas, although the exact reason differs from person to person. Option A is wrong because sea waves are not a general demographic reason for this kind of movement. Option B is correct because jobs and better facilities can attract rural residents to cities. Option C is wrong because the Moon’s size does not explain ordinary rural-to-urban migration. Option D is wrong because a death-rate formula is a statistical tool, not a reason for people to relocate. Remember that migration may also be influenced by problems at the place of origin, but this question asks for a common attractive reason.