In the following questions, a part of the sentence (a word or a phrase) has been highlighted in bold. four different ways of writing the word or phrase have been given in the options (2), (3), (4) and (5). Find the correct replacement of the given bold word or phrase. If the given word or phrase is grammatically correct, then select No improvement.

The Aryans were primarily planters, but supplementing their agricultural activities with weaving and pottery.