Which of the following is a benefit associated with a balanced structure in steers?

A balanced structure in steers is crucial for optimizing their performance, which is why better overall performance is the correct answer. Steers with a balanced and sound structure tend to exhibit greater efficiency in their movement, allowing for improved growth rates and better feed conversion. These physical qualities can lead to enhanced carcass traits, which ultimately increases market appeal and profitability.

A well-structured steer is less prone to injuries and ailments that may arise from structural deficiencies, ensuring that the animal can achieve its growth potential without interruptions. This results in healthier animals that can reach market weight more efficiently.

The other options relate to negative aspects that can occur with poor structural balance. For instance, decreased marketability, increased structural weakness, and higher fat content do not reflect the advantages gained from a well-balanced build. Instead, they represent issues that can hinder the animal's market value and overall performance. Therefore, the emphasis on better overall performance underscores the importance of structural balance in livestock management.