Question

how did cataracts in the nile river make transportation difficult?
○ cataracts caused parts of the riverbed to dry out.
○ cataracts contained rocks and boulders that made the river impassable.
○ cataracts changed the directional flow of the water.
○ cataracts’ shallow depth and rushing water made the river impassable.

Explanation:

To solve this, we analyze each option:

• Option 1: Cataracts (rapids) don't dry riverbeds; eliminate.
• Option 2: Cataracts are rapids, not just rocks/boulders; eliminate.
• Option 3: Cataracts don't change water direction; eliminate.
• Option 4: Cataracts have shallow, rushing water, making navigation (transportation) hard. This matches the definition of Nile cataracts (rapids with shallow depth and turbulent flow).

Answer:

D. Cataracts’ shallow depth and rushing water made the river impassable.