How do I get the nth element of a Seq?

mySeq.apply(1) is another way to say mySeq(1)

scala> val mySeq = Seq("A", "B", "C")
mySeq: Seq[String] = List(A, B, C)

scala> mySeq(0)
res0: String = A

scala> mySeq(1)
res1: String = B