During a speech, especially to a large group or crowd, it is essential that the visual aid not only convey the message to the listener but should first catch the attention of the audience. Among the given choices, the best illustration that would fit with the presentation of the artistic style of Diego Rivera is the "slideshow of his most famous work".
Answer: Varies
Explanation:
Relates to acid, something poisonous.
The highlighted part of the sentence is called a/an Professor Plum , who had been to the mansion before , expertly navigated the maze of rooms andcorridors to quickly reach the conservatory
I think this is what you are wanting to know. You would use a not an If the word/name (Professor Plum) would have been something starting with a vowel instead, you would use an
Is this what you were asking?