Ans.b
The Yanomami people, approximately 35000 in number are an
indigenous group residing in the Amazon Rainforest along the
borders of Venezuela and Brazil. For a questioaire survey
the participant need to be literate as they fill the questionnaire
themselves. While social experiment investigates the effects of a
policy intervention by randomly assigning individuals, or families
to different treatments. The most suited research technique for
studying yanomamo people is direct observation as it is one of the
least intrusive field methods.
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