Final answer:
The word 'treat' has the same long vowel sound as the word 'paint' due to the phonetically similar [eɪ] sound. The correct option is (d).
Step-by-step explanation:
The word that has the same vowel sound as the word paint is treat. The vowel sound in paint is the long 'a' sound, represented phonetically as [eɪ]. When comparing the options given:
a) tray also has the long 'a' sound, but it is represented with [eɪ] which seems similar but is not quite the same due to different vowel placement.
b) scream has the long 'e' sound, represented by [i:].
c) sweet has the long 'e' sound as well, represented by [i:].
d) treat has the long 'ea' sound, which is phonetically similar to [eɪ], making it the correct answer.