Please answer the question Thanks

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

Ineed . in the first paragraph, the word rival means: a. neighbor b. competitor c. customer d. manufacturer

To hide gridline when you display or print a worksheet