Question

lo 4.3. which muscle fiber type is used for endurance activities?
fast - twitch (type ii) fibers.
smooth muscle fibers.
skeletal muscle fibers.
intermediate - twitch (type iia) fibers.
slow - twitch (type i) fibers.

Explanation:

Slow - twitch (Type I) fibers are designed for endurance activities as they can generate energy aerobically over long periods, have high myoglobin and mitochondria content, and resist fatigue well.

Answer:

Slow - twitch (Type I) fibers.