Answer:
The right answer is; Piden
Explanation:
Because the narrator in the sentence is referring to several people and the verb used is to ask; therefore, we must identify the number, person, gender, context and time in order to logically conjugate the verb within the sentence and have agreement with what is being expressed.
Los griegos fueron grandes navegantes y costruyeron unos barcos especiales para la lucha, que denominaban birremes o trirremes segun las filas de remeros que tenian.
cual es la pregunta que haces?
It's :I am 15 years old........

Some examples of communicable diseases are:-
1. Hepatitis A
2. Hepatitis B
3. Ebola
4. Flu