Which national football team won the FIFA World Cup held in the year 2018, thereby becoming the world champion in men's football for that tournament?

Introduction / Context:
The FIFA World Cup is one of the most watched sporting events in the world, and its winners become a permanent part of football history. The 2018 FIFA World Cup was held in Russia and featured many strong teams. This question tests whether you remember which national team won the final and became the world champion in that particular tournament.

Given Data / Assumptions:

• The year of the tournament is 2018.
• The event is the men's FIFA World Cup.
• Options provided are Croatia, Brazil, Argentina, and France.
• The correct answer must be the team that won the final match in Moscow.

Concept / Approach:
To answer this question, you need to recall the 2018 World Cup final and the teams that participated in it. The final was contested between France and Croatia. France won the match with an impressive scoreline, securing their second World Cup title, the first being in 1998. Knowing the finalists and the outcome enables you to select the correct team from the options.

Step-by-Step Solution:
Step 1: Recall the location and year of the tournament: Russia, 2018. Step 2: Remember that the final was played between France and Croatia. Step 3: Recall the final score, in which France scored more goals than Croatia and won convincingly. Step 4: Note that Brazil and Argentina were eliminated earlier and did not reach the final match. Step 5: Select France as the national team that won the 2018 FIFA World Cup.

Verification / Alternative check:
You can verify this by thinking of celebrations and media coverage from that year. Images of the French team lifting the trophy, the manager and players celebrating, and references to France winning its second World Cup are common. Croatia was celebrated as a surprise finalist but not the champion. Brazil and Argentina have multiple World Cup titles but not for the 2018 tournament. All of these memories and facts confirm that France was the winner.

Why Other Options Are Wrong:
Croatia reached the final but lost to France, so it cannot be the champion. Brazil and Argentina are historically successful football nations but did not win the 2018 World Cup. Brazil was eliminated in the quarter finals, and Argentina exited earlier. Selecting any of these teams would contradict the well documented outcome of the tournament.

Common Pitfalls:
Some candidates confuse different World Cup years, such as mixing results from 2010, 2014, 2018, and 2022. Others may remember that Croatia made a deep run and mistakenly think it won the title. Keeping a mental timeline of recent World Cups and their winners is helpful for avoiding such confusion in sports related general knowledge questions.

Final Answer:
The winner of the 2018 FIFA World Cup was the national team of France.