Question

read the text.
bicycles have evolved over many years. in 1818, a heavy two - wheeled device called a \velocipede\ was patented in paris. the rider controlled the direction with a steering wheel and moved it forward by pushing his feet on the ground. it caught on quickly, and many people worked to refine its design. in 1863, pedals were added. a few years later, a new, lighter bike was developed that used a very large front wheel and a small rear wheel. called the \ariel,\ it became popular but was quite accident - prone. over the next decade, \safety\ bicycles were produced, incorporating welcome improvements such as air - filled rubber tires, brakes, and gears. by 1899, about a million bicycles were in use.
which organizational structure does this text primarily use?
sequential
compare - contrast

Explanation:

The text presents the evolution of bicycles in chronological order, using clear time markers (1818, 1863, "a few years later", "over the next decade", 1899) to show the sequence of design changes and developments. It does not compare or contrast different items side-by-side, instead following a time-based progression.

Answer:

sequential