Question

A. During one exhibition, however, some air became mixed with the hydrogen, and in the words of the shaken performer: "The explosion was so dreadful that I imagined all my teeth had been blown out!"
B. An entertainer would finish his acts by blowing the hydrogen he had inhaled towards a lighted candle; as the hydrogen caught fire, flames would shoot menacingly from his lips.
C. A paper bag filled with hydrogen amazed guests by zooming off into space.
D. When people learned about its unique lighter-than-air property, they began to use it in all sorts of parlor stunts.

• A. DCBA
• B. DBAC
• C. CABD
• D. ACBD

Hint:

In sequencing with examples, arrange them in increasing order of complexity or risk, ending with the most dramatic or impactful event for maximum effect.

Answer 1

The Correct Option is A

The topic is hydrogen’s lighter-than-air property and its use in entertainment. The logical starting point is D — "When people learned about its unique lighter-than-air property..." — because it introduces the subject and sets the background for the various stunts that follow.
After D, the sequence should provide a first example of such use. Sentence C — "A paper bag filled with hydrogen amazed guests..." — is the simplest example and serves as a natural first illustration of hydrogen-based tricks.
Next, B — "An entertainer would finish his acts by blowing the hydrogen..." — introduces a more dramatic and risky stunt, escalating from the simple paper bag trick to a fire-breathing act. This builds interest and tension.
Finally, A — "During one exhibition, however, some air became mixed with the hydrogen..." — describes a dangerous mishap, delivering a climactic and cautionary end to the paragraph. This ordering creates a clear progression from background → simple example → risky stunt → mishap.
Thus, the correct sequence is D → C → B → A, which matches option (a) DCBA.