Concept:Rhyming words end with the same vowel and consonant sound.
Explanation:The given word is “keep”, pronounced /kiːp/.
Its final sound is /iːp/.
Option B, “reap”, is pronounced /riːp/.
It has the same final sound /iːp/ as “keep”.
The other options end differently: “dead” /dɛd/, “seethe” /siːð/, and “threat” /θrɛt/.
So “reap” is the correct rhyming word.
Answer:B. Reap.