There are a lot of types of warfare and to name a few:
Biological warfareThis is also called as germ warfare. This type of warfare involves the use of infectious agents like viruses, bacteria or fungi and then be created as weaponized biological toxins. Examples would be: Anthrax, Cholera, Wheat Fungus.
Chemical warfareDuring world war I, this has been used and killed over a million casualties. Poison gas is the main chemical weapon used. The main effect of this weapon is through inhalation or skin contact. Examples would be: hydrogen cyanide, mustard gas and tear gas.
CyberwarfareThis can be done by using the technology to attack a certain country or nation. It is a digital type of attack that disrupts one country by hacking their computer systems and get vital information and aim to create damage, destruction or even death.
Nuclear warfareThis type of warfare involves the use of nuclear as a weapon to destroy the nation. It can be a weapon that can cause mass destruction in a shorter time and the effect can last long.
Going back to the question - Warfare in which the offensive is extremely rapid, violent and hard to resist.The answer would be C – Blitzkrieg Blitzkrieg is a German term for lightning war. It is an attacking force with the use of dense concentration or close air support that can break through the enemy’s defense. It is short, fast and very powerful attacks that can dislocate the defenders.
You may check out these links that talks more about Blitzkrieg - and