The sentence that best summarizes the passage is B) Two French brothers built the first hot air balloon from paper, warming the air inside with smoke so it would rise.
Answer:
transitive verb. 1 : to cause to be concentrated focused their attention on the most urgent problems
Explanation: that is answer thank you :)
Answer:
illustrates the assembly line principle of making things faster.
Explanation:
The assembly line principle illustrates the process in which the production is managed and the way it helps in the completion of the product. In this process the manufacturing process is broke up into simpler steps. The labor involved in the manufacturing of the product is divided.
In the given excerpt, fast food restaurants like Burger King, Pizza Hut and Mc Donald's presented their products like the factories. They adopt the method the assembly line for the purpose.
