Which word best describes a significant effort toward a goal?

The word that best describes a significant effort toward a goal is "strive." When someone strives, they put forth a substantial amount of effort and determination to achieve something. This term conveys a sense of struggle, persistence, and commitment, reflecting the hard work and diligence that is often necessary to reach a particular objective. Striving implies an active role in pursuing a goal, underlining the importance of tenacity and focus.

In contrast, the other options imply lack of effort or direct engagement with a goal. Complacency suggests a sense of satisfaction with one’s current situation and a lack of desire to make an effort for improvement. Neglect indicates a failure to care about something or an indifference toward a goal, which directly contradicts the idea of making a significant effort. Randomness refers to actions taken without a specific plan or purpose, thus not aligning with the concept of dedicated effort.