Where did the Constitutional Convention of 1787 take place?

1. D
2. b
3. c
4. c

To determine where the Constitutional Convention of 1787 took place, we can eliminate the incorrect answer choices:

1. D: This answer choice does not provide any specific location.
2. B: This answer choice does not provide any specific location.
4. C: This answer choice does not provide any specific location.

Based on the remaining answer choice of "C," we can infer that the Constitutional Convention of 1787 took place in the location represented by answer choice C. However, since you have duplicated answer choice C, it is impossible to determine the correct location.

To find the actual location of the Constitutional Convention of 1787, you can refer to historical sources such as books, articles, or websites that provide information about the event.