Allow me to clarify two things about inferences:
1) An inference is something that we can logically conclude from a certain set of information. There is no requirement that the information be unstated, or that it require a great deal of synthesis on our part. If I tell you that my name is Dmitry, you can infer that my name is Dmitry. That's fine! True, GMAT inferences will usually be harder than that, but
we can NEVER rule out an inference answer because the information is directly stated. Rather, if it appears that the information is directly stated, we may want to double-check. Since that answer would be very easy, we may have missed a key difference that invalidates the answer.
2) An inference does not have to connect multiple concepts. In other words, we can't say that one inference is better because it is an overall conclusion or ties the argument together. Either it is true based on the statements, or it isn't. That's all. Some inferences will synthesize multiple points, especially if those points lead to a paradox or difficulty. (For example, if the stimulus tells me that I can't get a job without experience, but that I can only get experience through a job, then I can infer that if I don't have a job, I can't get one.) Other inferences will simply draw from one statement. Our job is to find the one answer that must be true based on the information we have. If more than one answer (or no answer) seems true, then we're mistaken or the question is a dud.