While a title is often associated with an essay, it is not considered a key structural element like the introduction, body paragraphs, and conclusion.

The introduction of an essay serves to introduce the topic, provide context, and present the main argument or thesis statement that the essay will explore.

Body paragraphs are the core of an essay, where the writer presents evidence, examples, and analysis to support and develop the main argument or thesis statement.

A common structural pattern for body paragraphs is the 'Topic sentence - Supporting evidence - Concluding sentence' format, where the topic sentence introduces the main idea, the supporting evidence provides details and examples, and the concluding sentence wraps up the paragraph and transitions to the next point.

The conclusion of an essay serves to summarize the main points discussed throughout the essay, reinforce the thesis statement, and provide a sense of closure for the reader.

While expository, persuasive, and descriptive essays are common types of essays, narrative essays are typically not included in this category, as they focus on storytelling rather than presenting an argument or exploring a topic in depth.

Unity in an essay is essential to ensure that all paragraphs and ideas are directly related to and support the main topic or thesis statement, creating a cohesive and focused piece of writing.

While facts and statistics, personal anecdotes, and expert opinions are common types of evidence used to support claims in essays, fictional stories are generally not considered appropriate evidence, as they are not based on factual information.

Transitions are used in essays to create a smooth flow between ideas, paragraphs, and sections, helping the reader follow the logical progression of the argument or narrative.

While 'in addition', 'however', and 'therefore' are common transition words or phrases used to connect ideas and paragraphs, 'suddenly' is not typically used as a transition, as it suggests a sudden change or event, which is not the primary purpose of transitions in an essay.

Coherence in an essay is essential to ensure that the ideas and arguments are presented in a logical and organized manner, making it easy for the reader to follow the progression of thought and understand the relationships between different parts of the essay.

While using transitions, repeating key words and phrases, and using parallel structure are common techniques for achieving coherence in an essay, providing clear topic sentences is not directly related to coherence. Topic sentences are important for introducing the main idea of each paragraph, but they do not specifically contribute to the overall coherence of the essay.

Citations in an essay serve multiple purposes: they give credit to the original authors or sources of information, help avoid plagiarism by acknowledging the use of others' work, and demonstrate to the reader that the writer has conducted thorough research and is presenting accurate information.

MLA, APA, and Chicago are widely used citation styles, particularly in academic writing. Harvard, on the other hand, is not a commonly used citation style in most academic disciplines.

Proofreading an essay before submitting it is crucial to identify and correct errors in grammar, spelling, and punctuation, as well as to ensure that the essay is well-organized, coherent, and free from plagiarism. It helps the writer present a polished and professional piece of work.