Given below are four jumbled sentences. Select the option that gives their correct logical sequence.
A. These can turn around to track stars with the rotation of Earth.
B. Observatories are places to study space.
C. They are mostly built on the mountain tops.
D. Telescopes are placed in the dome-shaped roof of the building.

Correct option is A

The correct sequence is BCDA.
Explanation:
· B introduces the topic by defining what observatories are, making it the logical starting point.
· C elaborates on their location, providing relevant details.
· D specifies the structure of observatories, i.e., the placement of telescopes.
· A concludes by describing the functionality of the telescopes in relation to Earth's rotation.
Logical Sequence Explanation:
1. Start with the general introduction ( B: Observatories are places to study space).
2. Follow it with the specific location ( C: They are mostly built on mountain tops).
3. Add details about their structure ( D: Telescopes are placed in the dome-shaped roof).
4. Conclude with their purpose/functionality ( A: These can track stars).