The Parliament of which country became the first in the world to run fully on solar energy?

Introduction / Context:
Governments around the world are increasingly adopting renewable energy solutions to power public buildings. One notable milestone was when a national parliament building became the first in the world to operate entirely on solar energy. This achievement is significant in the context of climate change mitigation and sustainable governance.

Given Data / Assumptions:

The building is a national parliament.
It is fully powered by solar energy, meaning one hundred per cent of its energy needs are met through solar power.
The question asks which country Parliament achieved this first.
Four Asian countries are given as options: Japan, Pakistan, China, and Myanmar.

Concept / Approach:
The concept is knowledge of global renewable energy milestones. Pakistan Parliament House in Islamabad gained attention when it was announced that it would be fully powered by solar energy, making it the first such parliament in the world. Recognising this association is the key to selecting the correct answer.

Step-by-Step Solution:
Step 1: Understand that the question refers to a national parliament building completely powered by solar energy. Step 2: Recall news reports about Pakistan Parliament House in Islamabad adopting solar power for all its energy needs. Step 3: Match this recollection with the options and choose Pakistan.

Verification / Alternative check:
International and regional news agencies reported that Pakistan Parliament became the first in the world to operate entirely on solar energy, after a dedicated solar power project was completed. These reports confirm that option B, Pakistan, is correct and that the other countries did not achieve this specific first at the time.

Why Other Options Are Wrong:
Japan has advanced technology and renewable projects but did not have the first parliament fully powered by solar energy, so option A is incorrect.
China has extensive solar capacity but its parliament building was not the one recognised for this particular milestone, making option C wrong.
Myanmar is not known for such a pioneering parliamentary solar project in the context described, so option D is incorrect.

Common Pitfalls:
A common error is to assume that technologically advanced or larger economies like Japan or China must be the first movers in every renewable energy achievement. Another pitfall is limited exposure to international news from South Asia, which can lead to underestimating Pakistan initiatives. Regular reading of global current affairs helps to remember this unique fact accurately.

Final Answer:
The first parliament in the world to run fully on solar energy belongs to Pakistan.