1. Simon Commission visited India a total of 2 times. For the first time, he came to India in February-March 1928, while for the second time, he came to India in October 1928. The Simon Commission submitted its report in May 1930 and the British Government published it on May 27, 1930.

2. Simon Commission had said in its report that the High Court in India should be kept under the Government of India. Furthermore, implementing accountable governance in the provinces should be initiated.

Soil erosion is a serious environmental problem. Steps should be taken to curb this problem. Following are some ways to prevent soil erosion:

1. Plant trees on barren lands to prevent soil erosion.

2. Add mulch and rocks to trap plants and grass beneath to prevent soil erosion.

3. Mulch matting can be used to reduce erosion on slopes.

4. Place a series of fiber logs to prevent any water or soil from flowing away.

5. A wall at the base of a slope can help prevent soil erosion.

6. Every house should have proper drainage system so that water can flow into proper water collection systems.

7. Afforestation is the planting of trees on a large scale to check soil erosion. 

The first antibiotic discovered by Alexander Fleming in 1928 was:

(A) Penicillin

Alexander Fleming's discovery of penicillin revolutionized medicine by introducing the first widely used antibiotic, which proved effective against a variety of bacterial infections.