Question

Which period is largely associated with extinction of dinosaurs, increase in flowering plants and reptiles?
A. Triassic
B. Jurassic
C. Cretaceous
D. Permian

Answer 1

Hint: The period which is referred to as the last period of the Mesozoic era. This period occurred between 145 million years ago to 66 million years ago, for a span of 79 million years.

Step by step answer:
In option A, Triassic period is mentioned. It was the beginning of the Mesozoic era. It happened during the time difference of 251 million years ago and 199 million years ago. During this period of life eradicated from the earth. The reasons are expected to be a comet or an asteroid hit, a volcanic eruption, or a severe climatic change.
In option B, the Jurassic period is mentioned. At the end of the Triassic period, the Jurassic period commenced. It is a period of a duration of 56 million years. It is the middle of the Mesozoic acid. This period is also known as the age of reptiles. This is because dinosaurs emerged in this era of many kinds. Also, the Pangea continent split into the North and South American continent during this period.
In option C, Cretaceous period is mentioned. This period marked the end of the Mesozoic era. It was between the times from 145 million years ago to 66 million years ago. This is known as the age of dinosaurs. During this period, mammals, flowering plants, and birds emerged. This period also saw the extinction of non-flying dinosaurs.
In option D, Permian period is mentioned. This period precedes the Triassic period. It lasted for 47 million years. It is the end of the Paleozoic era. This period saw an enormous mass extinction.

Hence, the correct answer is option C.

Note: The end of the Cretaceous period resulted in the extinction of dinosaurs, marine invertebrates, flying and marine reptiles. It is assumed that the eradication was caused by a hit of a comet or asteroid, resulting in at the end of the era as well.