Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to read graphs [title] Identify what the graph represents. [step] Most graphs will have a clearly labeled x-element, spaced along the graph's horizontal axis, and a clearly labeled y-element, spaced along the graph's vertical axis. [substeps] The graph's title should also tell you exactly what it's about.

Ending1: For example, add or subtract both x-and y-elements. However, suppose you have a graph with an entire number of x-elements. Ending2: So pick whatever code you would like to share with your friends. For example, if the graph in " show how to diagnose osteoporosis " is cns, pick one of the above options. Ending3: For example, if the graph is a part of a north-south triangle, it would tell you which north to look for. It may also tell you what other elements it contains, such as tides, conditions, current maps, as well as indicators for horizontal structures. Ending4: [title] Check the scale for each graph element. [step] This applies to both line graphs and bar graphs.

Answer format: ending1/ending2/ending3/ending4