Answer:
yo lavo
Explanation:
Yo lavo
Yo lavo means I wash myself. So it is reflexive because you do it to yourself. Hope this helps ;)
You could use multiple words in that blank. For example:
Para el postre, quisiera pastel.
Para el postre, quisiera helado.
Estoy comiéndo la manzana
The third one :) llamo