Select the sentence with correct punctuation marks among the options given.
Bravo brave children are not afraid of darkness
a) Bravo! Brave children are not afraid of darkness.
b) Bravo! brave children are not afraid of darkness
c) Bravo! brave children are not afraid of darkness!
d) “Bravo!” brave children are not afraid of darkness.

Hint: When we have to correct punctuation marks in a sentence, we also have to correct capitalization. So if a word is written with a small letter instead of a capital letter then that answer is wrong even if the punctuations are correct.

Complete answer:
From the given options, option a is correct because Bravo is an expression of joy that requires an exclamation mark after it. The sentence should end in a full stop.
Option b is wrong because the letter b of brave is not in the capital. There is also missing punctuation at the end of the sentence.
Option c is wrong because the exclamation mark after Bravo is correct. The usage of an exclamation mark at the end of the sentence is not required because the sentence is not an expression of any extreme emotion. Also, the b of brave is supposed to be in capital letters.
Option d is wrong because the usage of quotation marks around Bravo is wrong and makes the sentence wrong on a whole.

Note:
 For using exclamation marks always look at the nature of the sentence. If the sentence expresses a lot of emotions, that is, you would say that sentence when you are very happy, angry, or shocked, then you use an exclamation mark.