Explanation: When writing, an author can have different purposes, for example: to inform, to entertain, to persuade, to criticize, etc. In the given excerpt we can see an example of an informative text, we can know that because it is giving facts about Elon Musk (like the companies he own), without giving any personal opinion (so it can't be persuasive). So the correct answer is the corresponding to option B: informative.
