El desayuno is what is known in English as breakfast.
It is the first meal of the day and it is recommended that it be very nutritious since it will be the one that energizes us to start the day and carry out our activities.
At breakfast you usually eat several things depending on the country. One of the most common is toasted bread. This bread can be eaten alone or can be spread on some candy or butter.
It is also customary to drink coffee, tea or orange juice.
Given this information we can say that the correct answer is option C.