Answer:
The leader of Erudite accuses Marcus of being abusive towards his son, Tobias.
#1. (B) simple predicate
#2. (A) simple subject
#3. (A) simple subject
#4. (C) Complete subject
Remember simple subject and simple predicate mainly consist of a noun and a verb respectively. Complete subject and complete predicate are a series of words that are around the noun and the verb.
Subject ends BEFORE the verb starts.
Predicate starts WHEN the verb starts.
I am tired now becuase I worked all day yesterday.