Respuesta :
The correct answer is the following: option D. The use of the word "joke"is the one that most clearly makes the tone of the sentence inappropriate for a class presentation. When formally writing an essay or a story for a class it is important to give a good impression through your writing. To do so it is recommended to use a more formal speech than the one you would commonly used when speaking to friends or family members. That is why the use of slang or colloquial terms such as "joke" Â is seen as an inappropriate tone for a class presentation.
