Answer: ‘Systematic’ means ‘being methodical’ and ‘organized.’ Thus, ‘methodical’ is a correct synonym. ‘Orderly’ means ‘to keep in a methodical way’ and thus it is also a synonym of the given word. The only option which is opposite in meaning is ‘disorganized’ that means ‘not properly planned.’ ‘Consistent’ means ‘steady’ or ‘stable and is not at all related.