To find the option with the same consonant sound as the one underlined in "Yesterday," we first need to identify the specific consonant sound in question. The word "Yesterday" begins with the letter 'Y'. In "Yesterday," the 'Y' represents a consonant sound similar to the first sound in the word "yes." This sound is called a voiced palatal approximant and is represented by the phonetic symbol /j/ in the International Phonetic Alphabet (IPA).
Let's examine each given option:
1. Jam: The word "Jam" begins with the consonant sound /d?/, which is different from the /j/ sound we find at the beginning of "Yesterday."
2. Union: The word "Union" begins with the consonant sound /j/, which is the same as the sound at the start of "Yesterday." It is also the voiced palatal approximant.
3. Jump: The word "Jump" begins with the consonant sound /d?/, differing from the /j/ sound in "Yesterday."
4. Umbrella: The word "Umbrella" begins with the vowel sound /?/ or /?/ depending on the accent, and it does not have a 'Y' consonantal sound at the beginning.
In conclusion, the option that has the same consonant sound as the beginning of the word "Yesterday" is Union because it correctly starts with the /j/ sound, which is the voiced palatal approximant sound represented by the letter 'Y' in "Yesterday."