OPTION 2 i.e. Split.Explanation-Amalgamate means to unite in or as if in an amalgam, let's have a look at all the given options. Merge: to cause to combine, unite, or coalesce.Split: to divide lengthwise usually along a grain or seam or by layersCollect: to bring together into one BODY or placeSeparate: to set or keep apart: DISCONNECT, SEVER Amalgamate means to combine or unite to form one organization or structure. So the best option here is split. Separate on the other hand, although a CLOSE synonym, it is too general to be the best antonym in the given QUESTION while Merge is the synonym; Collect is not related.