___________ means six months or more.

The term that signifies a duration of six months or more is best understood in the context of permanence and stability. "Consistency" refers to the quality of being reliable and uniform over time, which aligns with the idea of lasting effects or conditions that are maintained over an extended time, such as six months or more.

In contrast, other terms like "temporary" and "short-term" are generally associated with limited duration, typically much less than six months. "Durability" refers more to the ability to withstand wear, pressure, or damage, which is not directly tied to the concept of time in the same manner as consistency. Therefore, "consistency" is the term that effectively conveys the idea of something lasting six months or beyond, emphasizing reliability over that time period.