During which portion of a small group meeting do members discuss the tasks at hand, including problem solving, the sharing of information, and goals?

Which of the following is an example of crowdsourcing?

a. writing a blog post about your daily activities b. tweeting a trending hashtag for your followers to see c. calling a friend to ask a question about a personal topic d. posting a question to Yahoo! Answers for the online community to answer

Reveal how ethnocentrism causes potential problems in intercultural communication.

What will be an ideal response?