The expression ''plastered on each of their face like a death mask'' illustrates.

Analyzing the question: We need to identify the figures of speech in "plastered on each of their face like a death mask."

Step 1: Look for a comparison using "like" or "as." The word "like" appears in "like a death mask." This signals a simile, where one thing is directly compared to another using "like" or "as."

Step 2: Look for a second figure of speech.

• "Plastered on each of their face" suggests the expression (a look or smile) was stuck on the face the way plaster is stuck on a wall. Calling an expression "plastered" is an implied comparison without "like" or "as," so it is a metaphor.
• Personification: nothing here is given human qualities, since faces are already human. So no.
• Alliteration: there is no obvious repeated starting consonant sound ("plastered... face... like... death mask" does not form a clear pattern). So no.

Step 3: Check the options.

• A. Alliteration and metaphor: no alliteration is present.
• B. Simile and personification: no personification.
• C. Personification and alliteration: neither is present.
• D. Metaphor and simile: both are present.

**Answer: D.

Exam tip: For figure-of-speech questions, hunt for keywords first. "Like" or "as" means simile. Then check for an implied comparison without those words, which means metaphor. Eliminate options with devices you cannot actually find, such as alliteration, which needs clearly repeated initial sounds.