Given below are four jumbled sentences. Out of the given options pick the one that gives their correct order.

A. There are many gadgets that are operated by a remote control and contain a silicon chip.
B. This produces an infra-red beam, made up of electromagnetic waves.
C. When a button is pressed on the remote control, the chip sets off an electronic vibration.
D. The beam carries a coded signal for operating the systems.

ACBD

The correct answer is Option (2) - ACBD

The correct order of the sentences is ACBD.

Here is the explanation:

• Sentence A introduces the topic of the paragraph, which is remote control.
• Sentence C states that when a button is pressed on the remote control, the chip sets off an electronic vibration.
• Sentence B states that this produces an infra-red beam, made up of electromagnetic waves.
• Sentence D states that the beam carries a coded signal for operating the systems.