In a Multi-Source Reasoning set, Tab 1 says 350 returns received against goal 700, with 40% submission rate. Tab 2 says payment is $50 per completed return, budget $45,000. Maximum additional invitees the administrator can extend before risking budget overrun is closest to:

1. Identify what is being asked: this is a **Multi-Source Reasoning** question. 2. Apply the standard approach for this question type to evaluate each option. 3. The correct answer is **D. 800** — it satisfies the conditions of the stem. _Source: GMAT Focus DI Question Format Guide (examhunter.net)_