Synonym: in the following question, out of the four alternatives, choose the word which best expresses the meaning of the given word. RATIONAL

Introduction / Context:
This vocabulary question asks you to choose the best synonym for the word rational. Synonym questions are designed to test how accurately you know word meanings, especially in the context of reasoning and judgement. Rational is frequently used in discussions about decision making, problem solving, and scientific thinking.

Given Data / Assumptions:

• Target word: rational.
• Options: TIDY, AGREEABLE, LAUDABLE, LOGICAL, and EMOTIONAL.
• You must choose the word closest in meaning, not just any positive sounding adjective.
• Rational usually describes thought processes, decisions, or arguments that follow reason and logical principles.

Concept / Approach:
Rational comes from the same root as reason. It describes something based on clear thinking, facts, and logic rather than on emotion or impulse. Among the options, logical is directly associated with reasoned thinking. Tidy refers to neatness, agreeable to pleasantness, laudable to praiseworthiness, and emotional to feelings, often in contrast to rational behaviour.

Step-by-Step Solution:
Step 1: Recall the usual usage of rational in sentences like a rational decision, rational explanation, or rational argument. Step 2: Connect rational with reason, careful thought, and a logical process. Step 3: Compare each option with this sense and see which one overlaps most strongly. Step 4: Select LOGICAL because it best captures the idea of following consistent rules of reasoning.

Verification / Alternative check:
Try replacing rational with each option in a sample sentence: He gave a rational explanation. He gave a logical explanation still sounds correct. But He gave a tidy explanation or He gave an agreeable explanation do not express the same meaning. Emotional is often used in contrast, as when we say emotional reaction versus rational reaction, confirming that logical is the correct synonym and emotional is close to an antonym in this context.

Why Other Options Are Wrong:

• TIDY: Relates to cleanliness or order in physical space, not mental reasoning.
• AGREEABLE: Means pleasant, acceptable, or friendly, not necessarily reasonable.
• LAUDABLE: Means deserving praise, which is about moral evaluation, not about method of thinking.
• EMOTIONAL: Focuses on feelings rather than reason; it usually contrasts with rational behaviour.

Common Pitfalls:
Some students may choose laudable because rational decisions are often praiseworthy, but that is only sometimes true and not part of the core meaning. Others might be misled by agreeable because rational arguments can be agreeable, but again, they are not the same concept. The safe exam strategy is to link rational directly with reason and logic, which leads you to logical as the best synonym.

Final Answer:
Correct option: LOGICAL.