Which word is the subject of the sentence? The candidates will be speaking at today's rally.

a. candidates

b. speaking

c. rally

d. today's

In the sentence: The candidates will be speaking at today's rally. The answer is letter A: candidates. Sentences naturally contain a subject and a predicate. They could be simple (one independent clause), compound (two independent clause with coordinating conjunction), complex (a subordinate & independent clause) and compound-complex sentences (subordinate & two independent clause). These include clauses, conjunctions, coherence and balance and even to the number of words you use in your subject and predicate. In this case, the subject is candidates while the predicate is will be speaking at today's rally.