Step 1: Anchor in trait theory.
In Eysenck/Big-Five models, Extraversion reflects sociability, assertiveness, positive affect and stimulation-seeking; Introversion reflects reserve and preference for low stimulation; Ambiversion lies mid-range.
Step 2: Apply descriptors.
“Jolly, social, talkative” maps directly to high extraversion.
Step 3: Conclude.
$$
\boxed{\text{Option B}}
$$