How many meaningful four-letter English words can be formed with the letters $T, P, S, I$ using each letter only once in each word?

$A$ group of letters is given which are numbered $1, 2, 3, 4, 5$ and $6$. Below are given four alternatives containing combinations of these numbers. Select the combination of numbers so that the letters arranged accordingly form a meaningful word.
$E, H, N, T, O, R$
$1, 2, 3, 4, 5, 6$

Arrange the given words in alphabetical order and choose the one that comes in the middle.

Arrange the given words in alphabetical order and choose the one that comes first: Wasp,Wrist,Waste,War,Wrinkle.

Find which one word cannot be made from the letters of the given word: $VENTURESOME$.

Select the combination of numbers so that letters arranged accordingly will form a meaningful word.
$R\;A\;C\;E\;T$
$1\;\;2\;\;3\;\;4\;\;5$