Correct option is A
Option (a) contains an error.
· The
indefinite article “a” is incorrect before the word “hour” because “hour” begins with a vowel sound.
· Therefore, the correct article should be
“an”, not “a”.
· Correct sentence:
Start to relax an hour before bedtime with a hot bath or your favourite music.
Grammatical rule used:
· Use “an” before words that begin with a vowel
sound (not necessarily a vowel letter).
· "Hour" starts with a silent "h", so the vowel sound of "our" is heard.
�� Information-booster:
Words like honest, hour, heir also begin with a silent "h", so use "an" before them.