I like to use Facebook. It is my favorite way of keeping in touch with the relatives. | Which sentence is correctly capitalized and punctuated?

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Which sentence is correctly capitalized and punctuated?

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Question is given below.

Which sentence is correctly capitalized and punctuated?

a) I like to use Facebook. It is my favorite way of keeping in touch with the relatives.

b) I like to use Facebook it is my favorite way of keeping in touch with the relatives.

c) I like to use facebook it is my favorite way of keeping in touch with the relatives.

 d) I like to use facebook It is my favorite way of keeping in touch with the relatives.

The correct option is

a) I like to use Facebook. It is my favorite way of keeping in touch with the relatives.

Explanation:

The option, C and D has incorrect spelling of facebook because according to transcriptions rules you must transcribe company according to research of google and as you know that the first letter of Facebook is capital and the option B is wrong because full stop (.) are not used after Facebook when the first sentence is end therefor option A is correct

The option A is correct because the punctuation and spelling both are correct.