Read the given sentence and find which vowel sound matches the underlined word.

Maria s playing with her unicorn toy.

The correct answer is: Long U

The correct answer is "Long U".
When we articulate the word "unicorn", a prolonged "u" sound comes at the very beginning of the word and is followed by the coming consonant sound "n". Moreover, we have to make a circular shape with the movement of our upper and lower lips, creating a round tunnel shape. So, the correct answer is "Long U".