Out of the four alternatives, choose the one word that best substitutes the given description. A humorous drawing dealing with current events or politics.

Introduction:
This one word substitution question is based on media and journalism vocabulary. It asks you to identify the word used for a humorous drawing that comments on current events or politics. Such drawings are widely seen in newspapers and magazines and are important tools of political and social commentary.

Given Data / Assumptions:
- Description: "A humorous drawing dealing with current events or politics."
- Options: "Sketch", "Illustration", "Cartoon", and "Skit".
- We assume common media terminology used in newspapers, magazines, and television.

Concept / Approach:
The correct term is "cartoon". In the context of news and politics, a cartoon is a humorous or satirical drawing that comments on issues, leaders, or events. While "sketch" and "illustration" can refer to drawings, they are more general and do not specifically imply humour or political content. A "skit" is usually a short, humorous play or performance, not a drawing. The approach is to match the description closely with the standard definitions of these terms.

Step-by-Step Solution:
Step 1: Recall reading a newspaper where a satirical picture of a political leader appears with a funny caption. That is typically called a "cartoon".Step 2: Connect this memory with the description "humorous drawing dealing with current events or politics".Step 3: Look at option C, "Cartoon". It fits perfectly, as political cartoons are a recognised category in journalism.Step 4: Consider option A, "Sketch". Although a sketch is a drawing, it need not be humorous or political.Step 5: Consider option B, "Illustration", which refers to any visual that accompanies text, and option D, "Skit", which is a short acted scene. Neither matches the specific description as precisely as "Cartoon".

Verification / Alternative check:
Consulting any basic media studies book or dictionary will confirm that "cartoon" includes editorial or political cartoons that provide humorous commentary on events. Terms like "cartoonist" (the person who draws these images) and "cartoon strip" also support this meaning. "Sketch" and "illustration" are much broader and not inherently humorous, while "skit" clearly belongs to the world of theatre and performance rather than static drawings.

Why Other Options Are Wrong:
Option A, "Sketch", simply refers to a rough or unfinished drawing and does not necessarily carry humour or political content. Option B, "Illustration", can be any drawing that explains or decorates a piece of writing, without any requirement of humour or satire. Option D, "Skit", is a short, humorous stage or television performance, usually with actors. Only option C, "Cartoon", exactly matches the idea of a humorous drawing on current events or politics.

Common Pitfalls:
Some students automatically associate any drawing with "sketch" or "illustration" without paying attention to the words "humorous" and "current events or politics". Another pitfall is to confuse animated cartoons shown on television with still political cartoons in newspapers. In fact, the same word "cartoon" covers both, depending on the context. To answer such questions correctly, always focus on the key descriptive phrases in the question and choose the option that fits all of them, not just part of them.

Final Answer:
The correct one word substitute is Cartoon.