The most credible source in terms of researching the effects of smoking is letter b, research article in a scientific journal. It is because a credible source means that it is valid or could be relied on in which the research article is, because it has been researched and holds validity of which contains proof. Other choices does not correspond to the question for they don't hold any validity or proof in the topic that could be reliable.
1- <span>The ancient Chinese board game “Go” is invented long before there was any writing to record its rules. A game from the impossibly distant past has now brought us closer to a moment that once seemed part of an impossibly distant future: a time when machines are cleverer than we are.
<u>Because it's an action that started and finished in the past, this should read </u><u>was</u><u> (Simple Past)</u>
2- </span><span>For years, Go was considered the last redoubt against the march of computers. Machines might win at chess, draughts, Othello, three-dimensional noughts and crosses, Monopoly, bridge, and poker. Go, though, is different.
<u>This continues the same line of mistake as the first paragraph. Because it's referencing something that already happened ("Go was considered...), this should read </u><u>was</u><u> (Simple Past).</u>
The game required intuition, strategising <u>and</u> character reading, along with vast numbers of moves and permutations. According to legend, it was invented by a Chinese emperor to teach his subjects balance and patience: qualities unique to human intelligence.
<u>The conjunction and is used before the last element in a list. In this case, this word should be substituted by a comma because <em>character reading</em> is not the last element on that list.</u>
3- </span><span>This week, though, a computer called Alpha Go <u>defeats</u> the world’s best player of Go. It did so by “ learning” the game, crunching through 30 million positions from recorded matches, reacting and anticipating. It <u>evolves</u> as a player and taught itself.
That single game of Go marks a milestone on the road to the “technological singularity”, the moment when artificial intelligence becomes capable of self-improvement and learns faster than humans can control or understand.</span><span>
<u>These should read defeated ... evolved. This continues the same line of thought on subject-verb agreement. If it's talking about a past event, and the rest of the paragraph sustains that idea, then these verbs should be in Simple Past.</u></span><span>
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A central idea in Martin Luther King Jr.'s "I Have A Dream" speech is;
- -Nonviolence is an important tactic to use in the fight for justice.
In the fifth paragraph of his speech, Martin Luther King Jr. reminded the Negroes that in fighting for their rights, they must not resort to violence. He exhorted them to conduct their affairs through the principles of dignity and discipline.
He encouraged them not to allow their sufferings to result in a distrust of their white counterparts because even some of them were being supportive of their struggle and realizing that they were also important in society.
So, we can conclude that a central idea in Martin Luther King Jr.'s speech is that nonviolence was to be an important tactic to be used in their fight for justice.
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For me it would be option C.
I've chose that as my answer.
Answer: It is D hope this helps :)
Explanation:
