Answer: The answer is (c) across many years.
Step-by-step explanation: We are given four options out of which we are to select the one correct information that a line graph shows.
A line graph means a linear relation between any two unknown variables. If one unknown variable is the number of years, then the graph can show a relation between the number of years with any information like growth of some person, place or thing.
Therefore, a line graph can show information across many years.
Thus, (c) is the correct option.
