Words when inserted into the sentences change the meaning of the whole sentence. The word "deliberate" is the correct term that can be inserted into the blank. Thus, option E is correct.
Deliberate is the term that is used to define the long and unhurried movements that are done on purpose and intentionally. In the sentence, the professor deliberately took a long time explaining the basic concepts to the students making them frustrated.
The word elevated means to have a high intellect or something placed at a higher position. In other words, accelerated means high speed, and temperate means controlled and moderated situation. Lastly, swift means with very short time and greater speed.
Therefore, deliberate is the correct fit for the blank.
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