Use the drop-down menu to complete the sentence. Many of the achievements of the ancient Indus Valley civilization was due to their advanced knowledge of

A farming
B mathematics
C weather patterns
D geography

1.mathematics

2.c.
3.d.

its actually

1. mathematics
2. d
3. d
<3 hope this helped <3

B mathematics

To complete the sentence, you would need to select an option from the drop-down menu. The drop-down menu provides four options: A) farming, B) mathematics, C) weather patterns, and D) geography.

To figure out the correct answer, we can look at the phrase "Many of the achievements of the ancient Indus Valley civilization." We need to identify what these achievements were due to - their advanced knowledge of something.

A) Farming is one possible option. The Indus Valley civilization was known for its advanced agricultural techniques, including the use of irrigation systems and crop rotation.

B) Mathematics is another option. The Indus Valley civilization had a sophisticated system of weights and measures, as evidenced by artifacts such as the Indus Valley weight system.

C) Weather patterns is also a possibility. The Indus Valley civilization's success in agriculture depended on understanding monsoons and other weather patterns for irrigation and planning.

D) Geography is the final option. The ancient Indus Valley civilization flourished in a region with diverse geographic features such as fertile plains, rivers, and mountains. This geography would have influenced various aspects of their civilization, such as trade and economic activities.

Based on this analysis, to complete the sentence, we would need to select multiple options from the drop-down menu since several factors contributed to the achievements of the ancient Indus Valley civilization. So, you could potentially choose options A) farming, B) mathematics, C) weather patterns, and D) geography.