The correct option is
A Kalpana Chawla was selected to attend Punjab Engineering College at Chandigarh.
Option A - A comma is put after a name when that person is being addressed. As the given sentence doesn't address 'Kalpana Chawla', it is about her, hence, we can't use a comma after the name here. Thus option A is incorrect.
Option C - As 'Chandigarh' and 'College' are proper nouns, 'C' has to be capitalised for both the words. Hence, option C is incorrect.
Option D - As 'Punjab' is a proper noun, 'P' has to be capitalised. Also, the given sentence is a factual statement and not an exclamatory sentence, and that's why we can't end the sentence with an exclamation mark. Also, 'College' is a proper noun, 'C' has to be capitalised. Hence, option D is incorrect.
Option B - All the proper nouns are capitalised and the statement ends with a full stop. Hence, option B is the correct answer.
'Kalpana Chawla was selected to attend Punjab Engineering College at Chandigarh.'