Question

select the part whose main job is to direct cell activities by sending instructions to different parts of the cell. ribosome vacuole nucleus chloroplast

Explanation:

The nucleus contains the cell's genetic material (DNA) and controls cell - related activities by sending instructions to different parts of the cell. Ribosomes are for protein synthesis, vacuoles are for storage and maintaining cell turgor, and chloroplasts are for photosynthesis in plant cells.

Answer:

nucleus