Since independence, Malaysia has achieved significant success in oil exporting and manufacturing, with oil being a primary revenue source. Other sectors like textile production exist but are less influential in comparison. Thus, the best answer is A. oil exporting.
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Malaysia has achieved significant success since independence primarily through oil exporting and manufacturing. The country's economic growth is largely attributed to its oil production and investments in manufacturing sectors. While textile production is present, it is not the main contributor to Malaysia's economic success. ;