New PMP Question & Answers with explanation

You are the project manager for Xylophone Phonics. It produces children's software programs that teach basic reading and math skills. You're performing cost estimates for your project and don't have a lot of details yet. Which of the following techniques should you use?
Select one
Which of the following terms are other names for inspections?
Select three
What is one of the most important skills a project manager can have?
Select one
Which of the following statements regarding Ishikawa diagrams are true?
Select one
Which of the following factors are changes that occur to the external business environment that may impact the organization and your project?
Select one