I think that it is D. to change tenses, an irregular verb has to change its splling
Argumentation in text
One of most the fundamental things we use language for is argument. Arguing means claiming that something is true and trying to persuade other people to agree with your claim by presenting evidence to substantiate it. An argument is statement with three components:
A point of view, a claim, something we are arguing in favour of
The actual argument, the evidence we are using to argue with
A statement that links the initial claim to the argument and ensures that we understand how the argument functions.
The statement that connects the initial claim and the argument is referred to as the warrant. The warrant is thus an argument for the connection between the initial claim and the argument.
hope help
Answer
Many dieters thought that finding the right diet was like finding the Holy Grail
Explanation:
Many people try to lose weight and succeed. Then they gain it all back and plus some more. They seem to search for answers and nothing really works. You can spend your life looking for the holy grail or you can start today, practicing smart eating. This is not really a diet, but changing your lifestyle.
The Roman Poet Vergil which Dante is really admired to meet.