Oxisols are common in the tropics.
The answer is option A.
In which are Oxisols not unusual?
Oxisols shape basically in humid tropical zones under rainforest, scrub and thorn wooded areas, or savanna flora on flat to softly sloping uplands. they may be usually found on antique landscapes which have been concerned with moving cultivation for millennia.
Oxisols are very quite weathered soils that can be observed commonly in the intertropical areas of the world. Those soils contain few weatherable minerals and are frequently rich in Fe and Al oxide minerals.
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