Final answer:
Legal training is the correct answer. Legislatures can be professional or citizen-based, with significant differences in salaries, session length, and staffing. Term limits are most commonly overturned by state Supreme Court decisions.
Step-by-step explanation:
The sentence 'Legal training is commonly chosen as the first step to a career in public office' is the correct way to complete the statement. When it comes to legislatures, there's a distinction between professional and citizen legislatures. Professional legislatures tend to have higher salaries, longer sessions, and more staff members to assist legislative functions compared to citizen legislatures, which have lower salaries, shorter sessions, and fewer staff members.
As for term limits, when they have been overturned, the most common method was through a decision by the state Supreme Court, according to the options provided. This indicates that judicial action, rather than legislative action or executive decrees, typically plays a crucial role in reversing term limits previously set in place.