Final answer:
The true statement according to the Katznelson text is that proportional representation promotes multiparty systems by proportionally allocating legislative seats to parties based on the votes they receive, thus preventing votes for third parties from being wasted.
Step-by-step explanation:
According to the Katznelson text, the statement that proportional representation tends to promote multiparty systems is true. Proportional representation is an electoral system where the number of seats won by a party is proportionate to the number of votes received. Thus, votes for smaller or third parties are not wasted because these votes contribute directly to the party's overall seat count in the legislature. Contrary to a plurality or first-past-the-post system, proportional representation encourages a diversity of parties and minimizes the wasted vote phenomenon. Many democracies employ variations of this system, which reflects a wider range of political opinions in government and is less likely to result in a two-party system.
Additionally, most countries employing proportional representation set minimum thresholds that parties must meet to gain representation, thus preventing extremely small or fringe parties from gaining legislative seats. In essence, the proportional representation model supports the representation of various political perspectives within the legislature, in line with the ratio of public support received during elections.