Which of the following is an environmental factor that would most likely impact the academic performance of a high-school student with depression?

While a prolonged vitamin deficiency can lead to physical health issues that may indirectly affect academic performance, it is not primarily an environmental factor. Instead, it relates to nutritional health, which, although important, does not encompass the broader social and emotional influences present in a student's environment.

Poor executive functioning skills are cognitive challenges that can impede a student's ability to plan, focus, and manage time effectively. However, these skills are more related to individual cognitive processes than to environmental factors. While they can affect academic performance, they do not stem from the environmental context in which the student is situated.

A sudden bodily injury can temporarily impact a student's ability to attend school or participate in activities, but it does not reflect a lasting environmental condition like changes in family structure. This type of injury is typically a physical issue and may not consistently affect academic performance in the same way that family dynamics can.