C9. Click on the inference supported by the pie graph.
a. The pie graph represents 50 percent of the world's water supply.

b. The pie graph represents 100 percent of the world's water supply.

c. About 97 percent of the world is covered in water.

B. The pie graph represents 100 percent of the world's water supply.

Explanation:

Pie graphs are circular graphs used to present statistic data. Each data is presented on pie graph in different color so that sum of all data percentages fills the whole surface of the circle, or 100%.

From the title of the pie graph (World's Water Supply) we can see what it represents. Each color on the graph shows different source of water (97% of water supply comes from salt water in seas and oceans, 2% from polar ice and 1% from free circulating water). All these percentages add up to 100%.

recent brain research has shown some surprising benefits as a result of formal musical training. learning to play a musical instrument appears to develop parts of the brain that can even influence academic results. the studies indicate that the earlier a child begins training, the more benefits there are. one such study showed that children who began musical studies before the age of seven had a more developed brain in the region where language production and auditory processing take place. scientists believe there is mounting evidence to show that early musical training can improve brain function.

explanation: