The graph shows changes in interest rates since 1975.

what best sums up the information shown on the graph?
interest rates can go up and down.
interest rates can only go down.
interest rates can only go up.
interest rates show little change over time.

The graph is increasing first and then decreasing , after that its again increasing and decreasing.

So we can see a lot of variations in the graph.

The interest rate is fluctuating.

The attachment describes this fluctuation as :

From A to B : graph is increasing ( going up).

From B to C : The graph is decreasing ( going down).

From C to D : The graph is increasing ( going up).

From D to E: The graph is decreasing (going down).

Answer : Interest rate can go up and down.