Complex or simple carbohydrates do not take long to digest and cause blood sugar levels to rise quickly

unused glucose that is converted to blood sugar or glycogen or sucrose is stored in the liver.

The correct answer for:

Complex or Simple carbohydrates do not take long to digest and cause blood sugar levels to rise quickly  

Unused glucose that is converted to:

Glycogen

Explanation:

When carbohydrates are assimilated into our body they become glucose thanks to the liver. Then, they got o the muscles and many other systems. However, if they are not used they start to be storage in the liver as glycogen. In case they surpass our energy level they start to accumulate in other tissues in the form of fat. This is when we start to gain weight because we don't have muscle energy consumption.

you didn't give any options but heres what i can tell you: an inference is likely to change based on additional observations. the latter is something that you have seen or sensed using your sensory organs while the former is like a conclusion out from what you have observed.