Which of the following occupations is not common among the people of Southern coast-lands of Nigeria?

Cattle rearing is not a common occupation among the people of Southern coast-lands of Nigeria. This is because the Southern coast-lands of Nigeria are predominantly covered by dense tropical rainforests and mangrove swamps, which are not suitable for grazing. Additionally, the region is characterized by a high water table and periodic flooding, which makes it difficult to keep livestock. On the other hand, fishing, lumbering, and trading are common occupations in the Southern coast-lands of Nigeria. The region has a long coastline and numerous water bodies, which provide abundant opportunities for fishing. The dense forests in the region also provide opportunities for lumbering, while trading is a common occupation due to the region's proximity to the sea and the presence of several ports and markets.