What type of energy do electronic devices use?

They use electrical energy. Majority of devices that people now use are controlled by semi conductor components. Your answer is they are using electrical energy! But sometimes they do use radiation.

The development plan is the way that the company grows and the levels the employee goes up. if the plan is public to many people using an ebi server than it will rank up the employee. this being said a would be the best answer. 

Quantitative means numbers (think quantity/amount)qualitative means descriptive (think quality)so the correct answer is: (none of these make sense)the best answer is b.  what do you think about sandwiches without mustard?