Answer:
C). Piden.
Explanation: todas están en presente.
-No puede ser la "A" porque "Pido" es en yo.
-No puede ser la "B" porque "Pides" es en tú.
-Es la "C" porque "Piden" es ellos, ellas, ustedes.
-No puede ser la "D" porque "Pide" es él, ella, usted.
-It cannot be the "A" because "I ask" is in me.
-It can't be the "B" because "You ask" is in you.
-It's the "C" because "Ask" is them, them, you.
-It can't be the "D" because "Pide" is him, her, you.
-Hope this helps.