Select the most appropriate option to fill in the blank. She was moving slowly and _____ yesterday when she fell.

shakily  firmly  vaguely  strongly

shakily

The most appropriate option to fill in the blank is shakily. Shaky means moving or trembling in a way that is not firm or steady. Firm means solid and unmoving. Vague means not clear or well-defined. Strongly means with great force or power.