Which sentence is punctuated correctly?
in first-period biology class we learned that, the ecosystem, is a fragile and sensitive thing.
the freshmen, were excited to hear about extra-credit opportunities in their algebra class.
getting her license proved to be more difficult and tricky, than she thought it would be.
in order to serve students best, school districts need to ask for additional funding.

The correct answer is D. In order to serve students best, school districts need to ask for additional funding.

Explanation:

As any other punctuation mark, the use of the comma is guided by strict grammatical rules, most common uses of comma include using comma to separate elements of the same importance in a list; using comma to mark non-essential information and using a comma after introductory phrases. On the other hand, the comma should never be placed to separate the subject and the verb, the verb from the object or any other element in a simple sentence that go togeter..

Considering this, the sentence that is punctuated correctly is "In order to serve students best, school districts need to ask for additional funding" because in this sentence the comma is used to mark the end of an introductory phrase which is correct in terms of grammar. Additionally, other sentences are not correct as the comma separates elements such as the subject and verb or to separate other elements that go together.

1. read the following excerpt from franklin d. roosevelt's "fireside chat 19":

on the other side of the picture, we must learn also to know that guerilla warfare against the germans in, let us say serbia or norway, us; that a successful russian offensive against the germans us; and that british successes on land or sea in any part of the world strengthen our hands.

remember always that germany and italy, regardless of any formal declaration of war, consider themselves at war with the united states at this moment just as much as they consider themselves at war with britain or russia. and germany puts all the other republics of the americas into the same category of enemies. the people of our sister republics of this hemisphere can be honored by that fact.  

the true goal we seek is far above and beyond the ugly field of battle. when we resort to force, as now we must, we are determined that this force shall be directed toward ultimate good as well as against immediate evil. we americans are not destroyers — we are builders.

analyze the effectiveness of this excerpt. how does it function within the speech as a whole? how does the structure of the excerpt to convey the speech's purpose and key points? support your argument with evidence from the speech. (10 points)