Answer
True
Work Step by Step
Electron states with the same values of quantum numbers $n$ and $l$ form a subshell.
For any given value of $n$, the values of $l$ can be $l = 0, 1, 2,...,(n-1)$
For a given value of $l$, the value of $n$ can be $(l+1), (l+2), (l+3),...$
The smallest value of $n$ for a given value of $l$ is $~~~l+1$