Answer:
The correct answer will be running the non-polluting cars.
Explanation:
The technology of a car engine is based on the use of fuels like petrol and diesel which on combustion provides energy to cars. These fuels although provide energy to the running car but produces harmful gases in the environment like SO₂, CH₄, CO AND CO₂.
Nowadays attempts have been made by the scientist all over the globe to find the alternative sources to run the vehicle which can help in reducing the pollution like battery electric vehicles, flexible-fuel vehicles, compressed-air vehicles, hydrogen and fuel-cell vehicles and hybrid electric vehicles. These vehicles can help reduce pollution and can be a reliable source to depend upon.
Thus, will be running the non-polluting cars is the correct answer.
A. Unlike all other elements, hydrogen and helium are gases
<h3>What is special about hydrogen and helium?</h3>
Hydrogen and helium are the lightest elements in the periodic table having mass number 1 and 2 respectively. They both exist in the form of gases at room temperature. Both Hydrogen and helium are the two most common elements in the universe. Hydrogen make up about 75% of all matter present in the universe. Hydrogen belongs to the metal group but it is not metal but a gas.
So we can conclude that option A is the right answer for the given question.
Learn more about helium here: brainly.com/question/26226232
#SPJ1
