It means exactly what it says...to write about what you know. If you know about something than you'll have more to say and have an opinion. If you don't know about a subject...there's less to say.
So, Dr. Faustus is an embodiment of curiosity gone wild. His blase attitude towards humanistic science is, however, some kind of a scientific decadence: he casts away philosophy and law, to embrace magic, as a relic of medieval obsession over mysticism. In this regard, he is a subversion of the Renaissance Man. He thinks he has already learned all there was to learn about this world, so now he yearns for another kind of knowledge - esoteric, otherworldly, knowledge that isn't exactly a knowledge because you don't have to study long and hard for it, you just have to sell your soul to Lucifer.
I think the word "has" is the main verb
Laborious in this sentence means a task which requires a lot of efforts.
Answer: Option C.
<u>Explanation:</u>
Suffix is a kind of affix which is placed after the stem of the word in the word. This explains about the grammatical case of nouns and adjectives.
The word that has been used in the sentence which describes about the activity of the sentence is laborious. The activity speaks about that this task which is of making a four course dinner is not going to be easy and requires a lot of efforts in it.
