Answer:
a) -0.5
Explanation:
Correlation
- Correlation is a technique that help us to find or define a relationship between two variables. 
- It is a measure of linear relationship between two quantities. 
- A positive correlation means that an increase in one quantity leads to an increase in another quantity 
- A negative correlation means with increase in one quantity the other quantity decreases. 
- Values between 0 and -0.3 tells about a weak negative linear relationship, values between -0.3 and -0.7 shows a moderate negative correlation and a correlation value of of -0.7 and -1.0 states a strong negative linear relationship.
Anxiety symptoms and life satisfaction are negatively correlated. As life satisfaction increases the anxiety symptoms decreases.
Thus, a moderate correlation between them can be expressed by a correlation coefficient of -0.5