Concept:This question tests how well you can connect a spoken sound to its spelling in a word.
The correct answer depends on the actual pronunciation of each option, not just on the letters used.
Explanation:The word "of" is pronounced
/ev/ and it contains the voiced sound
/v/.
Even though "of" is spelled with the letter "f", the sound made is
/v/, which is a voiced consonant.
The other options do not contain this sound.
"Few" is pronounced
/fju:/ and begins with the sound
/f/, not
/v/.
"Off" is pronounced
/αf/ and ends with the sound
/f/.
"Photo" is pronounced
/’foutou/ and also uses the sound
/f/.
Since the target sound is the voiced
/v/, the word that contains that sound is "of".
Answer:A. of