Explanation:
Germany's condition of reduction of population is because of pandemic effect on global recolation.
Positive:There would not be much pandemics, diseases,& so on.
Negative: There would be an effect on economy, there'll be few or less workers,so on.(This would be a larger effect than the positives of course)
One reason of undergrowth is of jobless rate & bare utilisation anticipation.

I think this is the answer.
Its a strait (B) All the other answers aren't logical
Along its path, the Colorado River.
<h3>Briefing:</h3>
With a length of 1,450 miles, the Colorado forms one of the main river systems in the southwest United States and northern Mexico. Starting on the center stony mountain systems, the river runs to the southwest plateau regions and is renowned for its dramatic canyons. The horseshoe bend in Arizona allows you to witness how the rapids originate.
60-foot-deep whitewater torrents make up the majority of the river's upper reaches.
With swampy valleys in certain places close to the headwaters and the main valley's braided features. As it moves southward, the rover crosses beneath the Navajo Bridges and enters the marble canyons downstream.
The river turns to the west of Granite Gorge, close to Grande Canyon, where the Rover cuts up to one mile through the Colorado plateau and exposes some of the oldest rocks on Earth. The lower ends of the river spread to Lake Mead and the Hoover Dam.
About 75 miles south of Yuma, a sizable estuary is created before the Colorado River drains into the Gulf. The 7800 km2 area northwest of Mexico is made up of the Forma delta and flood plains.
To know more about Colorado River visit:
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They are composed of Metamorphic rock