<span>d. There are four seasons in a year
The main idea is the topic of the certain literature.
</span><span>Because in an essay, there is a topic , all you have to do with the successive paragraphs you are writing is to write things related to the topic given. Every paragraph in the essay must be a subtopic to the overall topic therefore having another topic in each paragraph will make your essay incoherent and unparalleled in ideas perspective</span>
the action or process of reasoning systematically in support of an idea, action, or theory.
Where is the rest of the question????
There are 5 uppercase vowels (A..E..I..O..U..) and 21 uppercase constonants( 26 letters in the alphabet minus the 5 vowels) and 9 non zero numbers.
5×21×9= 945