Answer:
<u><em>This is because it is not unsustainable and also unfair in a democratic society. </em></u>
Explanation:
For decades now, most of US soldiers have some from a certain demographic. The age bracket, education and even race and even geography plays a big role.
For example, the North-East of the United States is the most densely population region in the country but produces far less recruits than the Southern parts of the country.
This not only creates a civilian-military divided, but can restrict the talent and skills the army is constantly recruiting for. The more diverse the pool of recruits, the better equipped the US army would be.
You would put “need” in the blank
I don't believe that any of these are run-on sentences. This is because they all possess some form of punctuation, which creates a small to moderate oause in the sentence, allowing for the person reading to breathe in between, and preventing a run-on sentence.
Sorry to disagree but I think the answer is flower-tops. The poem is about nature yes but the term heads seems to refer to the flower-tops as the topic was daffodils. This is personification as if the daffodils were humans that could dance.