In the polluted environment, infectious diseases can be passed easily from one person to another6/15Mark the letter A, B, C, or D to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions. Question. In the polluted environment, infectious diseases can be passed easily from one person to another.fatalsafecontagiousimmuneGiải thíchĐáp án C Infectious = contagious (truyền nhiễm)