Directions: Read the following sentences (A, B, C, and D) and determine which of these sentences is/are grammatically and contextually correct.

 

A. As the project manager, it's his responsibility to ensure deadlines are met promptly.

B. The forecast predicts both heavy rains and low temperature across the region.

C. She was delighted by the surprise party thrown by her friends, who had organize it elaborately.

D. With modern technology, astronomers can explore deeper into space than ever before.