What book are you reading??
The answer would be alliteration. Since the words start with F. Alliteration is an interesting expression and an elaborate literary device which is distinguished by the rehashed sound of the first or second letter in a progression of words, or the redundancy of a similar letter sounds in focused on syllables of an expression.
Answer:
Who:Who are you?
What:What is an earthquake?
Which:Which side won?
That:He spoke so well that everybody was pleased.
Whom:She saw a lady whom she presumed worked at the store, and she asked her a question.
Whomever:Harry should give the award to whomever he thinks deserves it.
Whoever:Whoever he was, he was as strong as a lion.
John Snow is known as the father of epidemiology.
In this essay "On the Mode of Cholera" he used both reasoned argument along with documentary evidence to show that cholera spread from person to person.
He gave examples of rows of houses on opposite sides to each other, and how all of the members in one row contracted cholera, while only one person on the opposite row contracted the disease.
Direct observation. This is because the anecdotal fallacy is a logical fallacy and says that isolated events are not adequate pieces of evidence. It must be a well-documented case to be evidence.