A.
Almost at the same time, thousands of beautiful, red roses are in bloom and make the park the great resort of people in spring.
B.
Thousands of beautiful, red roses that blossom almost at the same time make the park the great resort of people in spring.
C.
Almost at the same time, thousands of red, beautiful roses are in bloom and make the park the great resort of people in spring.
D.
Thousands of red, beautiful roses that blossom almost at the same time make the park the great resort of people in spring.