Complex sentence: Asked about his choice of watercolour as his medium for painting, he said: It all began as a practical choice as it is non-cumbersome and easy to pack and use, and also odourless and easy to clean.
Split into simpler sentences: Asked about his choice of watercolour as his medium for painting? He said: It all began as a practical choice as it is non-cumbersome and easy to pack and use, and also odourless and easy to clean.