When you preview something, you inspect it. Previewing helps you get a glimpse of what's ahead before you read or something, kind of like skimming.
Answer: entangled
Explanation:
Mired has several meanings but in this case it refers to being entangled.
The scenario above tells of a situation where an Act to provide for better healthcare to Veterans, the VA Mission Act, had not been passed due to budgetary issues.
In using the word ''mired'', the author wanted to describe that the Act had not been passed because it had been entangled in budgetary disputes between different parties.
Past tense because the verb isolated is written that way.
Humanity's early fire-starting tools may have been dangerous because in the text is says,<span> "It could be lighted only by hard rubbing, and it sputtered and threw fire in all directions." This is dangerous because it would spew fire in all directions and if you think about it, the fire would hit something and then that thing would catch on fire. Lets say you were using the match inside your house. When you strike the match, a spark flies onto the wood floor and your house goes up in flames and you are stuck inside the house with no exit or escape. This may or may not happen, but because of the fire not being contained, there was a chance that you would be harmed.</span>