Final answer:
Christian apathy towards social problems, including racism, is one of the three realities that George Wood recognized as a barrier to achieving evangelistic goals.
Step-by-step explanation:
One of the three realities that George Wood identified, which needs to be overcome to reach evangelistic goals, is the Christian apathy towards social issues including racism - a widespread lack of action despite the call to love and serve. This apathy is an adversary to the work of Christ and contributes to hiding the true love of Christ from a world in need. The Christian ritual of attending church without engaging in resolving social problems represents a contradiction to the teachings of loving one's neighbor and working towards societal righteousness.