Tina Is a Master Runner

Multiple Choice

Tina is a master runner.If she practices consistently throughout her life,she can expect her performance speed to

A) significantly drop in her late twenties, followed by a steady decline into her sixties.
B) drop only slightly from the mid-thirties into the sixties, when it will fall off at an accelerating pace.
C) significantly drop each decade from the mid-twenties to the late sixties or early seventies.
D) increase through her mid-forties, when it will fall off at an accelerating pace.