People can make the best use of ideas,opinions, nature to create more resources when they have the knowledge skill and technology to do so.this is why people are a resource it is the ability of humans to help in transferring a physically material into a valuable resource at any given notice.
This saying critiques the religion like an oxymoron. From one hand, it is something beneficial when it comforts afflicted ones. From other hand, it can be seen as poisoning like brainwashing and manipulating which means afflicting the comfortable. Although people have become more critical towards religion, religion still is an option in our modern lives.
I believe the answer is c) situational variables