I can't really answer question 3 or 5 due to not seeing the passage or the picture to said passage, but I can answer question 4 for you. I would say the answer to 4 would be a.
Answer:
explain the essay's structure
Explanation:
A
Answer:
D........................
Informal is defined as relaxed, unofficial, or easygoing. If this is a multiple choice question, consider what choices are formal versus informal. <span>Anything that would fall under the category of "formal," which can also mean academic, rigid, proper, precise, or strict, can be ruled out as wrong answers. </span>Things that would be "formal" include tones, or the way that the story is written, that are very rigid and academic. In addition, a list of facts presented one after the other would be formal, not informal. Once you are done ruling these formal answers out, you will know what is informal.
Answer: a book about pigs
Explanation:
The source that would be the most unreliable source for a research on pigs would be a book about pigs.
A local pig farmer would be a reliable source as he is involved with the animals daily and therefore knows what they eat, how they mate, how they give birth and other things relating to them.
Also, a veterinarian and a friend with a pet pig would also give a reliable source of the research as they also have first hand experience with them.
The book on pigs is and unreliable source
