Question

1. The history of mammals dates back at least to Triassic time. A. Miocene and Pliocene time was marked by culmination of several groups and continued approach towards modern characters.
B. Development was retarded, however, until the sudden acceleration of evolutional change that occurred in the oldest Paleocene.
C. In the Oligocene Epoch, there was further improvement, with appearance of some new lines and extinction of others.
D. This led in Eocene time to increase in average size, larger mental capacity, and special adaptations for different modes of life.
6. The peak of the career of mammals in variety and average large size was attained in this epoch.

• A. BDCA
• B. ACDB
• C. BCDA
• D. ACBD

Hint:

For evolution/history-based jumbles, follow strict chronological development — oldest events first, recent ones last.

Answer 1

The Correct Option is A

Sentence 1 sets a broad historical frame. We now look for chronological development.
(B) comes first, mentioning the earliest change in the Paleocene.
(D) follows — developments in the Eocene such as size and brain increase.
(C) continues the evolution story into the Oligocene with diversification and extinction.
(A) ends with Miocene and Pliocene — modern group formation.
Sentence 6 concludes with the statement that this epoch was the peak.
Final order:
1 — B — D — C — A — 6
BDCA