Read the sentence from "Island of Hope, Island of Tears." Immigration officials grouped Chinese herbalists--medical practitioners who use different mixtures of herbs to prevent and treat various ailments--with merchants, and thus they were allowed entry. Which phrase signals a cause-and-effect relationship?
who use
to prevent
and thus
they were

umm duh they in differrnt places

i used to know but i learned it a long time ago sorry

explanation:

research question: do the predicted benefits of genetic enhancements outweigh the possible negative consequences of this technology?  

what information do i need to research in order to answer this question?  

-predicted benefits of genetic enhancements

-negative consequences of genetic enhancements

-existing, if any, consequences of the new technology

-possible consequences if the technology is perfected

what sources will have the information?

-scientific research documents or news articles summarizing research

-articles in science and medical journals, magazines, and electronic databases

-books

-experts at genetics: geneticists, scientists, professors

here you go have a nice day

judge is the correct answer