Subject: Personalized links 8 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: Retargeting with product-specific ads 9 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: Coherence-optimization 9 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: Electric razor for bald heads 19 general knowledge quiz questions. It should take around 4 minutes to complete all the questions.

Subject: Product issue 28 general knowledge quiz questions. It should take around 6 minutes to complete all the questions.

Subject: Free membership registration 30 general knowledge quiz questions. It should take around 6 minutes to complete all the questions.

Subject: Try our service for free 24 general knowledge quiz questions. It should take around 5 minutes to complete all the questions.

Subject: Try our website for free 9 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: Become a subscriber 13 general knowledge quiz questions. It should take around 3 minutes to complete all the questions.

Subject: Downgraded functionality 11 general knowledge quiz questions. It should take around 3 minutes to complete all the questions.

Subject: Functionality decrease 13 general knowledge quiz questions. It should take around 3 minutes to complete all the questions.

Subject: App latency 9 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: App phone support 18 general knowledge quiz questions. It should take around 4 minutes to complete all the questions.

Subject: App progress tracking 27 general knowledge quiz questions. It should take around 6 minutes to complete all the questions.

Subject: App loading screen 12 general knowledge quiz questions. It should take around 3 minutes to complete all the questions.

Subject: App search 18 general knowledge quiz questions. It should take around 4 minutes to complete all the questions.