Which of the following contains only saturated fatty acids in its structure?

Which fatty acid contains a double bond between two consecutive carbon atoms?

Cholesterol is synthesized in the $......$.

Assertion $A$: Fat is stored in the body as a reserve food material.
Reason $R$: Lipid is a nutrient with a high energy value.
Which option is correct for Assertion $A$ and Reason $R$?

$A$: Lipoproteins are complex lipids and conjugated proteins.
$R$: The structure of lipoproteins is formed by fatty acids,alcohols,and amino acids.

Match Column-$I$ with Column-$II$ and select the correct answer:

Column-$I$	Column-$II$
$(A)$ Triglyceride	$(i)$ Animal hormone
$(B)$ Structural lipid	$(ii)$ Feathers and leaves
$(C)$ Steroid	$(iii)$ Phospholipid
$(D)$ Wax	$(iv)$ Fat storage in droplet form