What is wrong with using this sentence in a business letter?

lots of liberty students like to go to pop's and think it is really cool.

the word "lots" and the words "really cool" are too informal.
the use of the word "liberty" without any other information is confusing.
"pop's" is too informal and may offend the business owner, since it is not the full name.
all of the above

Read the exercept from robert stawell ball great astronmers,based on the context of the exerpct what does the word protacted most clearly means? a.seeming to be truthful b.weighing an excessive amount c.extending in a specific decision d.continuing for a long time e.being exceptional and talented

Excerpt from saving the thrift store: a dramalee washington2rosa: eddie, i don’t recognize the shirt you’re wearing. when did you get it? 3louis: it doesn’t look as disheveled as the soccer shirts you wear all the time.4eddie: well, i’m not going to tiptoe through the soccer field to keep my clothes neat. (louis playfully aims a soccer ball at eddie. rosa deflects it.)5rosa: what i was trying to say is that the shirt looks really good. (louis wanders over to the morning newspaper that is still sitting on the front lawn. he leafs through it while eddie and rosa talk.) in line 5, which point is rosa making when she says eddie’s shirt looks good? a) the store must have new merchandise. b) rosa is jealous of eddie’s new shirt. c) eddie must have done his own laundry. d) eddie often wears old, tattered shirts.

In paragraph 5, president obama remarks: “you know, when trayvon martin was first shot i said that this could have been my son. another way of saying that is trayvon martin could have been me 35 years ago.” how does president obama use rhetoric in this quote to contribute to the overall meaning of his speech?