Answer:
If any, it would be the last line (<em>Clover thinks that if Boxers continues working so hard etc.)</em> providing the correct answer.
Explanation:
Clover and Boxer (horses) present the working class animals in Animal Farm by George Orwell, ruled by the pig Napoleon. After Boxer is hurt in the battle with the humans, Clover takes care of him and tries to get him to slow down. Eventually he collapses on the job and is delivered to the horse slaughterer.
Go to a dictionary online. People here could give you a definition that's correct, but not the dictionary definition. Plus it's against the rules to copy paste from a website. ;) https://www.oxforddictionaries.com/ here's a website.
The best fit definition for this example would be definition 3. Definition 2 doesn't apply to closing a window correctly so that is already out of the question. A bolt that is part of a window isn't made out of fabric so definition 4 is out as well. Now that it's down to 1 and 3, considering it says "please make sure you <u>latch</u> the bolt", keep in mind that the definition of 'latch' is "a metal bar with a catch and lever used for fastening a door or gate" so choice number 3 would best fit :) Hope this helps! x