Glucagon causesGroup of answer choicesAn increase in glucose utilisation and storagean increase in fatty acid synthesis and lipid storageAn increase in glycogen synthesisAn increase in blood glucose concentration

Glucagon causes an increase in blood glucose concentration.

Here's a step-by-step explanation:

1. Glucagon is a hormone that is produced by the pancreas. It is released when the levels of glucose in the blood are low, such as between meals or during physical activity.

2. The main role of glucagon is to prevent blood glucose levels from dropping too low. It does this by stimulating processes that increase the concentration of glucose in the blood.

3. When glucagon is released, it travels to the liver where it stimulates the breakdown of glycogen, a stored form of glucose, into glucose that can be released into the bloodstream.

4. Glucagon also promotes the production of glucose in the liver from non-carbohydrate sources, a process known as gluconeogenesis.

5. Additionally, glucagon inhibits the synthesis of glycogen in the liver, further contributing to an increase in blood glucose levels.

6. Therefore, the release of glucagon causes an increase in blood glucose concentration.

So, the correct answer is "An increase in blood glucose concentration".