C. Yesterday, Fernando did a __ and very unpleasant thing at school. a. vile b. trivial C. concentric d. stupendous

## Step 1<br />The problem is a fill-in-the-blank question where we need to choose the most appropriate word from the given options to complete the sentence. The sentence is about Fernando doing something unpleasant at school.<br /><br />## Step 2<br />We need to consider the meaning of each word in the options and how it fits in the context of the sentence.<br /><br />### 'Vile'<br />This word means something that is extremely unpleasant or bad. It fits the context of the sentence as it describes an unpleasant action.<br /><br />### 'Trivial'<br />This word means something that is of little importance. It doesn't fit the context of the sentence as it doesn't describe an unpleasant action.<br /><br />### 'Concentric'<br />This word means something that has a common center. It doesn't fit the context of the sentence as it doesn't describe an unpleasant action.<br /><br />### 'Stupendous'<br />This word means something that is extremely impressive or large. It doesn't fit the context of the sentence as it doesn't describe an unpleasant action.<br /><br />## Step 3<br />Based on the meanings of the words, 'vile' is the most appropriate word to complete the sentence.