What present-day device did the invention of the transistor most directly influence?

a) automobile
b) light bulb
c) atomic bomb
d) laptop computer

The correct option is D

The transistor is a semiconductor electronic device used to deliver an output signal in response to an input signal. It fulfills functions of amplifier, oscillator, switch or rectifier. Currently it is found in virtually all electronic devices for daily use such as radios, televisions, audio and video players, quartz watches, computers, fluorescent lamps, tomographs, cell phones, although almost always within the so-called integrated circuits.

The other objects named do not have transistors.

its main object was the establishment of "settlement houses" in poor urban areas, in which volunteer middle-class "settlement workers" would live, hoping to share knowledge and culture with, and alleviate the poverty of, their low-income neighbors.

it should be a. song dynasty’s civil service examination system created an administrative bureaucracy manned by the landed aristocracy.