Explanation:

Let’s break it down—here’s how these words actually sort in a dictionary:

- First, start at “Um...” and “Un...”: "Um" comes before "Un" alphabetically.

- So, “Umbilical” and “Umbrella” should come before any “Un...” word.

- Between “Umbilical” and “Umbrella,” look at the third and fourth letters: "i" (in Umbilical) comes before "r" (in Umbrella).

- Next, check all “Un...” words: “Unaltered,” “Unanimous.” Compare letter by letter—“Unal” (altered) comes before “Unan” (imous).

- After the Un... group comes “Urgent,” since “Ur” is after “Um” and “Un.”

Correct alphabetical order:

- 1. Umbilical

- 4. Umbrella

- 3. Unaltered

- 5. Unanimous

- 2. Urgent

Let’s match this to the options:

- Option 1: 1, 4, 3, 5, 2

- Other options put “Un...” or “Ur...” in the wrong place.

Simple as that.