Point of view is the mode of narration that the author employs to let the readers "hear" or "see" what happens in the story. There are three major types of point of view, first person, second person, and third person. First person uses the pronouns "I" or "we". Second person uses the pronoun "you". Lastly, the third person utilizes the pronouns "he", "she", "it", "they", or a name. In this case, the passage reads:
"She's a good dog, isn't she?" Doris said, hoping one of them would agree with her.
In this passage, the pronouns she and them indicate third-person point of view (C).
Hello. Unfortunately your question is incomplete, which does not allow it to be answered. However, from the context of your question it is possible to assume that you want to know which of the two doctors is using the correct approach. If this is the case, we can say that Dr. Jayson is correct, as he is offering his patients a scientifically proven drug that will not harm patients, but will help them to treat any problem. Dr. Yuri can only try the new drug on patients if they agree to participate in this research, otherwise it would be unethical and dangerous.
The allusion refers to Albert Einstein and his scientific ideas
As for this question, when you want to thank someone for the help, it all depends on how that someone has helped you and if the manner that you were helped would also come in as a factor.
When there is immediate contact between the helper and the one being helped, the most direct way to thank someone is to vocalize it and say it to that person that gratitude that you wanted to express. Other ways would be to return the favor to that person. Most people prefer them to be of equal or more than the value of the help given at the moment. If there is no such available way, then what others tend to do is to remain in debt for that person. So when the time comes that the person needs help, they can readily assist and offer the help they needed.
I told u the answer in the comments