Number one, quien.
Number two, que.
Number three, lo que.
Number four, quienes.
Puerto Rico's capital was founded in 1521 by the Spanish conquistadors as a military stronghold.
Answer:
Quiero comer una hamburguesa con queso y un pollo frito
Explanation:
I'm taking spanish too ;)
Answer: C
C- De= of; En= in; Por= by