What is the "Trowel" used for in Freemasonry?

The Trowel in Freemasonry symbolizes the spreading of brotherly love and affection among Masons. This tool is metaphorically used within Masonic rituals to illustrate the importance of unity and harmony within the fraternity. Just as a trowel is used in construction to spread mortar and hold elements together, in Masonic teachings, it represents the act of fostering goodwill and camaraderie among brethren, ensuring that the bonds of friendship and support are strengthened.

Each of the other options provides different interpretations or uses for tools associated with architectural or organizational tasks, but they do not capture the essential symbolic role of the Trowel in promoting fraternity and love among Masons.