Step 1: Understanding the sentence.
The sentence describes an event where the person touched hot milk and burned their fingers. We need a word that describes the effect of hot milk on the skin. "Scorched" fits best here as it refers to burns or injuries caused by excessive heat.
Step 2: Analyzing the options.
- Sizzled refers to a sound made by something hot, typically not used for describing the effect on the skin.
- Scorched refers to a burn or damage caused by heat, which fits the context of touching hot milk.
- Scaled refers to something related to scaling or fish scales, which does not make sense in this context.
- Sunburnt refers to burns caused by sun exposure, which is unrelated to the boiling milk.
Step 3: Conclusion.
"Scorched" is the correct word to describe the burning effect on fingers from hot milk.
Thus, the correct answer is 2. scorche(D)
Final Answer:
\[
\boxed{\text{The correct answer is 2. scorche(D)}}
\]