ASVAB Armed Services Vocational Aptitude Battery (#35)

Section: Paragraph comprehension

The transistor, a small, solid-state device that can amplify sound, was invented in 1947. At first, it was too expensive and too difficult to produce to be used in cheap, mass-market products. By 1954, though, these cost and production problems had been overcome, and the first transistor radio was put on the market. According to this passage:

There was no market for transistors before 1954.
When transistors could be produced cheaply and easily, the transistor radio was put on the market.
Transistors were invented in 1947 by order of the Department of Defense.
Transistors are still expensive to produce.