Answer :

Certainly! Let's break down the question into a detailed solution.

First, we need to answer the question, which involves naming three changes experienced from adolescence to adulthood and providing one example of a challenge associated with each change.

### Step-by-step Explanation:

1. Physical Changes:
- Description: During the transition from adolescence to adulthood, individuals go through various physical changes. This includes growth spurts, development of secondary sexual characteristics, and changes in body composition and muscle mass.
- Example Challenge: Adjusting to new body image and dealing with puberty-related issues can be challenging. Adolescents might feel self-conscious or uncertain about their rapidly changing bodies.

2. Emotional Changes:
- Description: Emotional development is significant during this period. Individuals begin to experience a broader range of emotions and learn how to manage and understand these emotions better. There is also a shift towards developing emotional maturity.
- Example Challenge: A specific challenge is developing emotional maturity and managing increasing responsibilities. Adolescents may struggle with mood swings, identity formation, and stress from new responsibilities.

3. Social Changes:
- Description: Social dynamics change greatly as individuals move from adolescence to adulthood. Relationships evolve, social roles shift, and there are increasing expectations in terms of behavior and interaction.
- Example Challenge: A key challenge in this area is navigating changing social dynamics and expectations in relationships and social roles. This can include making new friendships, balancing time between social activities and responsibilities, or adjusting to different social expectations.

Next, we perform the arithmetic calculation given:
[tex]\[ (3+3)(6) \][/tex]

### Detailed Calculation:

1. Solve the expression inside the parentheses:
[tex]\[ 3 + 3 = 6 \][/tex]

2. Multiply the result by 6:
[tex]\[ 6 \times 6 = 36 \][/tex]

Combining both parts:

- We answered the theoretical part of the question by listing the three changes and their associated challenges.
- We performed the arithmetic operation and found that [tex]\((3+3)(6) = 36\)[/tex].

Hence, the detailed answer to the question is that the three changes are Physical Changes, Emotional Changes, and Social Changes. The challenges associated with them can be adjusting to new body image, developing emotional maturity, and navigating changing social dynamics.

And the numerical result of the given arithmetic problem is:
[tex]\[ 36 \][/tex]