Question 20

Explanation

Let's break down the logic of the statements using mathematical symbols to make the structure clearer.

Suppose we define the following three statements:

• $P$: Routinely jogs in the morning and has a good diet.
• $Q$: Has a strong physique.
• $R$: Healthier body.

Based on the question text, we get the following logical premises:

Premise 1: Someone will have a strong physique if they routinely jog in the morning and have a good diet.

Premise 2: A strong physique makes the body healthier.

Fact: Andi routinely jogs in the morning and has a good diet.

Conclusion Analysis

We can combine Premise 1 and Premise 2 using the Hypothetical Syllogism principle:

This means: "If someone routinely jogs in the morning and has a good diet, then their body will be healthier."

Since Andi satisfies condition $P$ (routinely jogs and eats well), he automatically satisfies condition $R$ (has a healthy body).

Therefore, the conclusion that "Andi has a healthy body" is valid and definitely true based on deductive logic.