choose the CORRECT answer choice for the following questions and explain why: According to the findings ., what is the most important variable for explaining the variation in ecological outcomes among MPAs? This variable explains 19% of the variation in outcomes among MPAs. Clearly defined MPA boundaries MPA features (e.g. MPA size, age, fishing regulations) Environment (e.g. ocean conditions) Staff capacity (adequate staff for MPA monitoring, enforcement, administration, etc.)