Final answer:
A lack of enjoyment or decreased interest in previously enjoyed activities can be a possible symptom of depression.
Step-by-step explanation:
A possible symptom of depression can be a change in interest or pleasure in previously enjoyed activities. Option C, 'I just don't like going to the movies like I did before,' suggests a lack of enjoyment or decreased interest in a previously loved activity. This change in enjoyment can be a sign of depression.