The best way to format a direct quote from this passage is: Wilson states that the animals clearly want a better life, and "it is wrong not to give them one" (1).
A writer resorts to direct quotation when he/she takes the exact words that another author has used in a text or speech and puts them inside double quotation marks. The third option is the correct one because it includes the same words that Wilson wrote in his/her text and also because they are found around quotation marks. In contrast, the first and last options are incorrect because they do not include quotation marks. Moreover, although inverted commas are found in the second option, the writer included some words that Wilson has not used.
