Answer:
D.
Step-by-step explanation:
The given text describes about the importance of fire extinguishers. The text tells that these red colored cans filled with substance to suffocate fires are important. Though they may not be helpful to extinguish wild fires but they are very helpful to douse small fires.
The sentence that can be left out and does not summarize the text is option D. The summary of any text consists of important information that are vital to remember. First three statements are important to know about the importance of fire extinguishers as they state vital informations.
Therefore, the correct answer is option D.