You present an argument when you offer one or more reasons in an effort to support or provide evidence for a conclusion. When you do this, you should make it quite clear to your readers that you are in fact presenting an argument, instead of merely providing information; and you should also be clear about which statement is your conclusion, and which ones are your reasons.
One excellent way of doing this is to use inference indicators:
words, phrases, or even whole sentences that indicate or point toward
reasons and conclusions. A conclusion-indicator (such as "therefore")
tells a reader that a conclusion comes right after it; a reason-indicators indicate
that reasons come right after them (such as "because"). Here are a few
typical inference indicators:
SOME CONCLUSION INDICATORS
SOME REASON INDICATORS
And here are some words that are not inference indicators:
however but and moreover in addition or if . . . then . . . unless
They aren't inference indicators because they do not tell you, "here comes a conclusion," or "here comes a reason." Inference indicators do tell you (because of their basic meaning) that either a reason or a conclusion is coming next!