Concept:The underlined word is "rear", pronounced
/rɪə/, so the correct option must contain the same vowel sound,
/ɪə/.
Explanation:"rear" is pronounced
/rɪə/, and the underlined letters produce the sound
/ɪə/.
Option A: "realm" is pronounced
/relm/, which contains the vowel sound
/e/, not
/ɪə/.
Option B: "mere" is pronounced
/mɪə/, which contains the same vowel sound
/ɪə/ as "rear".
Option C: "reed" is pronounced
/ri:d/, which contains the long vowel sound
/i:/, not
/ɪə/.
Option D: "mare" is pronounced
/meə/, which contains the vowel sound
/eε/, not
/ɪə/.
Therefore, only "mere" shares the same vowel sound as the underlined part of "rear".
Answer:B. mere