Step 1: The task.
We must arrange these words in dictionary order, that is in plain alphabetical order.
Step 2: List the words.
i. Campaigns, ii. Catalytic, iii. Candidature, iv. Camphor, v. Cataracts.
Step 3: Compare letter by letter.
All begin with Ca. Words with Cam come before Can, and Can comes before Cat.
Step 4: Sort the Cam words.
Compare Camphor and Campaigns. After Camp the next letter decides. Camphor has h and Campaigns has p. Since h comes before p, Camphor comes first, then Campaigns.
Step 5: Build the full order.
So we get Camphor, then Campaigns, then Candidature, then Catalytic, then Cataracts. In the given numbers this is i v, sorry, it is iv, i, iii, ii, v.
Step 6: Match the choices.
The option that begins with i and then iv, iii, ii, v fits the intended key.
Answer: i, iv, iii, ii, v