I think the answer is transitive.
        
             
        
        
        
The correct answer is B) factual way. 
Both the video transcript from "Dr. X and the Quest for Food Safety" and the text Food Safety Myths Exposed present information in a factual way.
"Dr. X and the Quest for Food Safety" is an instructional video that teaches the importance of clean and healthy food. Indeed is a series of five videos about the science of our food supply. The topics that are factually covered by the videos are different kinds of bacteria, the Farms, processing and transportation of food, the food at retail and home, and outbreak and future technology. 
 
        
                    
             
        
        
        
I was sixteen years old, it was my birthday when father took me and my sibling a science world museum in Vancouver in Canada. It was my first visit there and as the name suggest, I was wondering it will be boring and educational type museum only. As we reached there, I entered the museum after paying ticket. I was not really excited as I though it will be waste of my day.
When I went inside the museum, I was completely surprise to see there physics, biology and chemistry all together in a completely different manner. There were few structures which demonstrated how human body function, there were some mechanical machines created with wood which complemented physics. 
When I went further into a large lounge there was a huge piano which a person can play by walking on the keys. It was so much fun playing music along with dance. There was lift yourself activity, which is just like a manual jumpin ride, in which you pull yourself up through a rope attached to a pulley. 
When It was 6 in the evening my father asked us to go back to home but I suddenly asked him When we will be here again? This place is so much fun. I had no idea my birthday will be so much wonderful after visiting this place. This was fun along with learning. One of the most memorable day of my entire life.
 
        
             
        
        
        
You may be closer to work, and there will be more job or business opportunities because there are more people
        
             
        
        
        
IF I can sing well enough, I'll join the school chorus.
The IF implies that something is conditional i.e. it may happen, it may not happen (it depends on whether you can sing well enough!)
Hope this helps... :)