What should Zoe do to thoroughly check the spelling on the web page?

Zoe is working on a Spanish course web page for a foreign languages professor at the university. When she checks the spelling, every Spanish word is appearing as not found in the dictionary.

a. Ignore all of the Spanish words and just check the English words.
b. Change the dictionary to Spanish and just check the Spanish words.
c. Add the Spanish words to the English dictionary.
d. Check the spelling twice: once with the English dictionary and once with the Spanish dictionary.

d. Check the spelling twice: once with the English dictionary and once with the Spanish dictionary.