That is true, and there are other things in introduction paragraph, including words, punctuations, and other things. Also need thesis too.
Answer:
Average is the middle, or the "normal".
In the case of this question the average family would be a middle class family.
The texture measures the <span>nutrients in the soil.</span>
D. friendly and respectful because it is a friendly letter, you don't want to be sarcastic which could come off as rude, and you don't want it to be formal either