The Reagan Doctrine

a. Allied the United States with Europe and Latin America against the Soviet Union
b. Asserted American interests in countries where the Soviet Union had been active
c. Sponsored cooperation between the Soviet Union and United States
d. Pursued a strict policy of nuclear deterrence

b. Asserted American interests in countries where the Soviet Union had been active

Explanation:

United states followed this doctrine from early 1980s until the end of cold war in 1991.

Under this doctrine , united states extended direct or indirect support to all anti communist movement in countries spread over Asia , Africa and Latin america . It was aimed at overwhelming the cold war in order to bring peace in the world.

they are made of gases.

they have a spherical shape.

they make energy through fusion.

the seeing the electronic configuration we can say that the element is fluorine.

fluorine is the most electronegative element in the periodic table.

but by only seeing the configuration we cannot say about its reactivity because we don't know if its configuration after excitation or by addition of electrons.

but if not then, it is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. as the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine.