Choosing a size

You are the one betting. These four set the size, or tell you not to bet at all.

1. 1 · CappedIs he capped?
2. 2 · InelasticWill he fold to any size?
3. 3 · Opposite handWhat size would I bet with the opposite hand?
4. 4 · TargetWhich part of his range am I targeting?