Which is the best summary based on topic sentence for the paragraph? Establishing peace and order gave Rome much-needed stability. The Romans' first code of law was established around 450 BC. On 12 separate tablets, twelve legal experts wrote down a list of Roman customs about property and punishing people who did wrong. This code was called the laws of the Twelve Tables (tablets on which the laws were inscribed) and at first its details of procedure were restricted to a body of patrician leaders. However, due to plebeian pressure, the Twelve Tables were put into writing around 250 BC, making it more accessible to the common man for interpretation and understanding. By the end of the third century, Roman law covered relations among Romans, dealings with foreigners, and eventually covered even magisterial law to strengthen and correct existing law. As the Roman Empire was in its first steps of dominance around 27 BC, the law's development was taken over by the emperors, who added and revised freely. As the law grew more complex the government literally trained jurists who could understand and correctly interpret the laws. Rome's laws gave stability as they developed. The Twelve Tables were written for the common man. Rome's laws got more complex.

1. the relationship between a pronoun and its antecedent- reference

reference refers to the relationship between mainly pronoun and another unit of grammar- noun phrase or noun.

2. a singular noun naming a collection or group- collective noun.

collective noun refers to the kind of noun which refer to the name of people, thing or anything in collective. for instance bundle of sticks, herein 'bundle' is collective noun.  

3. a modifying clause whose subject and/or verb is implied- elliptical clause

it is a clause in which words are being left out. on the other hand, the missing word is understood due to the logic or pattern of the sentence.  

4. two or more nouns and/or pronouns serving the same grammatical function and followed by a pronoun that references one or all nouns- compound antecedent

compound antecedent refers to which is made up of two or more words which are joined by 'or' or 'and.'

5. an adjective clause introduced by a pronoun- relative clause.

relative clauses are the clauses which begin with the relative pronouns such as when, where, which, that or who. the noun that precedes, relative pronouns identify or define that noun.  

6. the word, phrase, or clause to which a pronoun refers- antecedent.

antecedents refers to the phrases, clauses or words which are replaced with one of the third personal pronouns.