Reading biographies helps children understand that:

Reading biographies helps children recognize the significant impact that individuals can have on society and the world around them. By learning about the lives of various figures—ranging from scientists and activists to artists and leaders—children gain a deeper appreciation for the contributions of individuals in shaping history and driving change. This understanding emphasizes the message that even one person, through their actions and choices, can influence events, inspire others, and create lasting legacies.

The other options do not effectively capture this theme. For instance, the notion that history is unchangeable contradicts the very essence of biographies, which illustrate how people's actions can lead to shifts in societal norms and values. Similarly, the idea that only famous figures matter overlooks the stories of everyday individuals who also make significant contributions in their communities. Lastly, the statement that all stories are fictional dismisses the factual basis of biographies, which provide real-life accounts meant to educate and inspire young readers.