A. who's. this translate to who is.
Modal helping verbs can be used to indicate a mood or tone of a verb in a sentence.
A modal assisting verb affects the main verb in this sense by expressing necessity or possibility. The modal verbs include can, could, may, and might. Modal verbs, often referred to as modal auxiliaries, are used to express the concepts of capability, likelihood, necessity, permission, and duty. These verbs never change their form.
An auxiliary verb known as a modal verb is used to indicate modalities, which are the states or "modes" in which a thing can exist. Examples of modalities are a possibility, ability, prohibition, and necessity. The modal verbs should, must, will, might, and could are a few typical examples.
Modal verbs are most usually employed in academic writing to denote logical possibility and least frequently used to denote permission. For each of the eight tasks that modal verbs can serve in academic writing, they are enumerated and ranked from strongest to weakest.
Learn more about modal verbs here:
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Would you like to learn how to keep at least five extra dollars a day? Today I will show you how switching from bottled water to tap water will allow you to keep money in your pocket and save the environment.
Based on the given dialogue above, the discussion technique that Daniel is clearly showing is challenging established ideas. The answer would be option A. What makes me say that this is challenging established ideas is that, the news presented above is already released in the media, and therefore, this makes the ideas established. Now, just according to Daniel's observation, he is trying to question the ideas that are given in the news. Hope this helps.
