Answer: (B) Mexico and Russia
Step-by-step explanation:
In the First-past-the-post system, the person who received the most votes for a position, wins the position, regardless of if they have a majority or not. With Proportional representation, the different factions in the electorate will get to be represented based on proportion.
Mexico and Russia both use the first-past-the-post and proportional representation systems in electing their lower house to ensure that their citizens get as much representation as possible.