Question

which of the following phrases expresses sickness?
estoy más o menos
estoy deprimido
estoy enfermo

Explanation:

We analyze the meaning of each Spanish phrase:

1. Estoy más o menos translates to "I'm more or less/so-so", which describes a neutral general state, not sickness.
2. Estoy deprimido translates to "I'm depressed", which refers to a mental emotional state, not physical sickness.
3. Estoy enfermo translates to "I'm sick/ill", which directly expresses sickness.

Answer:

Estoy enfermo