C. If you undergo __ in life, you struggle with trouble, bad luck and difficult times. a. adversity b. morale C. consensus d. aptitude

## Step 1<br />The problem is a fill-in-the-blank type question where we need to choose the most appropriate word from the given options to complete the sentence. The sentence is: "If you undergo __ in life, you struggle with trouble, bad luck and difficult times."<br /><br />## Step 2<br />We need to understand the meaning of each word in the options:<br />- Adversity: This word refers to a state of hardship, trouble, or misfortune.<br />- Morale: This word refers to the confidence, enthusiasm, and discipline of a person or group at a particular time.<br />- Consensus: This word refers to a general agreement among a group of people.<br />- Aptitude: This word refers to a natural ability to do something.<br /><br />## Step 3<br />Now, we need to choose the word that best fits the context of the sentence. The sentence talks about struggling with trouble, bad luck, and difficult times. The word that best fits this context is 'adversity'.