Step 1: Compare the first letters.
All words begin with “in-,” so we must check the next letters.
Step 2: Compare the sequence.
- inequality (i-n-e …)
- indisputable (i-n-d …)
- interactions (i-n-t …)
- inventions (i-n-v …)
Step 3: Arrange accordingly.
The alphabetical order is:
inequality (e comes before d, t, v)
indisputable (d comes after e but before t, v)
interactions (t comes after d)
inventions (v comes after t)