Answer: it’s that it continued
Explanation: it went across the nation, meaning it was so successful that it happened
In formal writing and communication, the sentence "Mom said she thought Maria had been treated wrongly and that she should stick up for herself." is more appropriate. Although wrong and wrongly are both adverbs, some writers consider using adverbial "wrong" as incorrect, so you might want to play it safe and use "wrongly" instead.
Answer:
Heat is a concept that is important to understand in various engineering fields. It is particularly relevant for civil, mechanical and chemical engineers because heat transfer plays a key role in material selection, machinery efficiency and reaction kinetics, respectively.
B, as there is no point in a comma there. There is already an and in the sentence which is a conjunction.
