Question

Arrange the following into a meaningful sequence:
1). Our knowledge about life developed over the centuries thanks to the many philosophers, physicists, chemists and biologists, who examined such complex matters according to their different points of view.
2). Out of this long history, I wish to quote here only one date, the year 1953
3). In that year, Miller and Urey carried out their famous experiment about the primordial universal soup, whose foundations had already been expounded by the Russian chemist Alexandre Oparin in 1924
4). From a mixture of five gases, methane, ammonia, carbon dioxide, hydrogen and water vapor, and an electric discharge as the source of energy, complex molecules were produced, including amino acids.

• A. 1,2,3,4
• B. 1,3,4,2
• C. 2,3,1,4
• D. 3,1,2,4
• E. 1,4,2,3

Answer 1

Answer: (A)

1,2,3,4

Answer 2

Reading the jumbled sequence, we can easily identify the starting sentence. Sentence 1 starts the sequence by introducing the topic 'Our knowledge about life developed over centuries…'

2 follows 1 as it refers to 'this long history' and a year (1953) that has been taken out of this long history.

3 follows this as it continues with its reference to 'in that year' ( 1953)

And 4 completes the sequence by expanding on the experiment mentioned in 3.

Hence 1, 2, 3, 4 is the correct sequence, and A is the correct answer.