What occurred in Spain as a result of the marriage of Ferdinand of Aragon and Isabella of Castile? A) the reconquista b) the fall of Granada c) the Hundred Years' War d) the religious freedoms

I say d because the religious part

I'd say d. The religious freedoms because of,

"Traditionally, Isabella has been regarded as the living symbol of the religious awakening in Spain, but an examination of the letters exchanged between the king and the queen shows that they acted in perfect accord, moved by the same fanatical urge."