When you travel in Himalayas, you will see the following: Which of the above can be said to be the evidences of Himalayas being young fold mountains?

Answer: (d) 1, 2, 3 and 4

All four are signs of young fold mountains.

Statement by statement

1. ✓ YES Rivers cut deep gorges as the land keeps rising.

2. ✓ YES Sharp U-turns (Brahmaputra, Indus) follow the bends of young ranges.

3. ✓ YES Parallel ranges are typical of young folding.

4. ✓ YES Steep, unstable slopes cause frequent landslides.

The idea

A young fold mountain belt is a landscape still being shaped by compression and uplift. Rivers cut into rising land while steep slopes remain unstable. Read the listed features as a combined pattern of active mountain building; no single feature proves youth everywhere.

Indian plate converges with Eurasia → Crust is compressed and thickened → Ranges rise and structures guide drainage → Rivers cut down into rising terrain → Steep slopes develop → Weak slopes fail as landslides

Why the others are wrong

(a) Drops parallel ranges and steep slopes.

(b) Drops parallel ranges.

(c) Drops gorges and U-turns.

Also know

The Greater Himalaya, Lesser Himalaya and Siwaliks form broadly parallel belts. The Indus and Brahmaputra bend around the western and eastern ends of the mountain arc. The Aravallis are an old, deeply worn mountain system; the Alps are another young fold belt. Mountain age and the age of rocks inside it are different ideas.