Respuesta :

b. False
 The subject of a sentence can be a noun clause. 
its false. it can be a noun phrase 
e.g 
the book belongs to Sara.
in this sentence "the" is determiner (article) used to highlight the specification of book (the subject in the sentence) which belongs to a specific person Sara.
together they (the and book) make a noun phrase.
hope you understand the thing