Final answer:
The second degree of the E minor scale is called the supertonic, which is an F# in this particular scale. The term 'supertonic' refers to the note directly above the tonic in a diatonic scale.
Step-by-step explanation:
The term for the second degree of the E minor scale is known as the supertonic. In the context of the E minor scale, the second degree is an F#. In music theory, the term "supertonic" refers to the note that is one whole step above the tonic of a diatonic scale, which in the case of E minor, the tonic is the note E.
It's worth noting that when referring to scale degrees, musicians often use terms from solfege, in which case the supertonic would be called "re." However, among the options provided, the correct answer is indeed supertonic. In terms of music notation and compositions, such as those by J. S. Bach, understanding these scale degrees is crucial for analyzing harmony and melodic progression.