You will be required to score 70% of the total marks in each quiz, to complete the Examination and receive the certificate, also note that you are allowed only 3 attempts in each quiz, so if unsuccessful in your first attempt, you should review the learning course specified below, read the questions more carefully and do better in the next two attempts, your highest score among all 3 attempts will be considered and if the score is below 70% in all three attempts you cannot complete the examination.
To do better in the quiz refer to the Learning Course - PBS101 - Foundation Course on PBS Pro