What does a light bulb marked 100 w mean? (a) uses 100 a of energy per second. (b) uses 100 j of current per second. (c) 100 c of charge flows through the bulb per second. (d) uses 100 v battery (e) none of these.

(E) none of these.

Explanation:

first that all we need the meaning of a Watt

" is a unit of power. In the International System of Units (SI) it is defined as a derived unit of 1 joule per second,[1] and is used to quantify the rate of energy transfer."  

definition taken from wikipedia.org

now with this concept we have that:

100 W means 100 J/s .Therefore it uses 100 J energy per second

therefore on the answers don't mention this three terms together

Joules, energy and second so the answer must be.

(E) None of these