Step 1: Recall the definition of a noun.
A noun is a word that names a:
person,
place,
thing,
idea or quality.
Step 2: Analyse each option.
take — a verb (shows action).
all — a determiner/quantifier.
energy — a thing/quality, hence a noun.
your — a possessive adjective.
Step 3: Identify the noun.
The word energy names a thing, so it is a noun.
Hence, the correct answer is
\[
\boxed{\text{energy}}
\]