Which of the following is NOT one of the five big personality traits identified by Costa and McCrae? A Extraversion (A) B Openness C Adaptability (D) Conscientiousness D

## Step 1<br />The problem is asking us to identify which of the given options is NOT one of the five big personality traits identified by Costa and McCrae. The five big personality traits, also known as the "Big Five" or "Five-Factor Model", are:<br />1. Openness<br />2. Conscientiousness<br />3. Extraversion<br />4. Agreeableness<br />5. Neuroticism<br /><br />## Step 2<br />We compare the options given in the problem with the five big personality traits. We can see that "Extraversion", "Openness", and "Conscientiousness" are all part of the Big Five personality traits.<br /><br />## Step 3<br />However, "Adaptability" is not one of the Big Five personality traits. Therefore, the correct answer is option C.