Hello there.
<span>Interactions between actin and myosin filaments of the sarcomere are responsible for
</span><span>(c) muscle contraction
</span>
A or C
Just choose any of those!
The term that is being referred to in the given item above is essential lipid which other may more fondly refer to as essential fatty acids. These essential substances are mostly needed for the maintenance and integrity of the cellular membranes to be able to do their functions.
Correct answer - A (Elephants have few offspring, so they need to protect them from predators.)
Why? - The herd is led by the oldest and often largest female in the herd, called a matriarch. They live in herds so that the young elephants stay safe from predators.