Who does the underlined word “He” refer to?

(单选题)What does the underlined word “it” in Paragraph 3 refer to? (单选题)What is Dr Kyriazis’ opinion probably based on? (单选题)Which of the following can first be chosen as a volunteer? (单选题)The volunteers’ primary responsibility is to help people wit (单选题)What does the underlined part mean? (单选题)The text is meant to ______. (单选题)30.（ ） (单选题)29.（ ） (单选题)28.（ ） (单选题)27.（ ）