Who wanna learn Lua Script and make games on Rblx studio

Based on structural elements what type of expository text does this excerpt from a 1917 congressional address by president woodrow wilson exemplify

How can you avoid the problem of groupthink? a. by choosing a group leader to direct the group b. by composing the team of only like-minded individuals c. by encouraging all members to voice their opinions d. by keeping quiet when you disagree with another group member's opinion

Could someone me with this question?