In which situation will both a benefit and a loss from migration appear together?

Correct answer: The destination city receives labour but housing pressure increases

Direct answer: A is correct. Migration can have more than one effect at the same time. A destination city may receive workers who fill jobs, support production, provide services, and contribute to the local economy. At the same time, if housing construction and public services do not keep pace with the additional population, rents, overcrowding, pressure on water and sanitation, and demand for transport may increase. Thus, receiving labour is a possible benefit, while rising housing pressure is a possible cost or challenge. Option A is correct because it explicitly includes both sides. Option B is wrong because no movement means there is no migration effect. Option C is wrong because a fall in death rate is a natural population process, not a pair of migration effects. Option D is wrong for the same reason: a rise in birth rate concerns natural increase, not migration. The actual effects vary by place and by the ability of the destination to plan services, so migration should not be described as entirely good or entirely bad. Memory cue: migration can add workers and add pressure together.