Hello!! I, personally, think it's A. Direct.
The words that best reflect Lincoln’s formal diction are the ones in the second option: brought forth.
To bring forth means to cause something to happen or be seen or known. The phrase is usually used in formal contexts or in literature.
All of the other options have words that are not considered formal and can be considered of every-day use.
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C) An author will use a tone, to impart a certain effect to influence readers, such as using negative tones on a topic they feel strongly against, hoping to influence the reader to have the same beliefs.
Answer:
If I win 1 lakh rupees in a speech contest then probably I will do something that I won't regret later on.