"Es probable" is a phrase which is often translated as "is likely", and "probablemente" is an adverb which is often translated as "probably". Learn more about the difference between "es probable" and "probablemente" below.
A phrase is a group of words commonly used together (e.g once upon a time).
a. is likely (singular)
Es probable que el peso se devalúe en los meses siguientes.The peso is likely to go down in value during the next few months.
b. are likely (plural)
Es probable que los miembros del consejo voten en contra de la moción.The board members are likely to vote against the motion.
c. it's likely