Sentences of a paragraph are given below in jumbled order. Arrange the sentences in the correct order to form a meaningful and coherent paragraph.

A. The same year, Frank Drake launched the first SETI search, Project Ozma, by pointing a large radio telescope at two nearby sun-like stars to see if he could detect any radio signals coming from them.

B. These first, foundational attempts to detect radio or laser signals from another civilization were all looking for focused, powerful signals that would have been intentionally sent to the solar system and meant to be found.

C. Following the invention of the laser in 1960, astronomers showed that visible light could also be detected from distant planets.

D. The modern scientific search for extraterrestrial intelligence began in 1959 when astronomers, Giuseppe Cocconi and Philip Morrison, showed that radio transmissions from Earth could be detected by radio telescopes at interstellar distances.

Correct option is A

Option (a) DACB is indeed the correct order of the sentences to form a meaningful and coherent paragraph.
· The sequence starts with sentence D, introducing the beginning of the modern scientific search for extraterrestrial intelligence in 1959, highlighting the work of astronomers Giuseppe Cocconi and Philip Morrison.
· Sentence A follows with the launch of Project Ozma by Frank Drake in the same year, marking the first SETI search.
· Sentence C continues by mentioning the invention of the laser in 1960 and the discovery that visible light could also be detected from distant planets.
· Finally, sentence B concludes by explaining that these early attempts were focused on detecting intentionally sent signals from another civilization.
This order effectively presents a chronological progression, beginning with the foundational work in 1959, followed by the first SETI search, the introduction of laser technology, and the intentions behind these early searches, creating a coherent narrative.