Bredig’s arc method involves:

• a.) Dispersion
• b.) Condensation
• c.) Peptization
• d.) Dispersion and condensation both

Bredig’s arc method is primarily associated with the process of dispersion. This technique is used to create colloidal solutions by dispersing solid particles in a liquid medium. The method involves generating an arc between two electrodes submerged in a liquid, which leads to the formation of fine particles that are then dispersed throughout the liquid.

Key Processes in Bredig’s Arc Method

• Dispersion: The main focus, where solid particles are broken down into smaller sizes and distributed in a liquid.
• Condensation: While not the primary focus, it can occur as particles aggregate after dispersion.

In summary, the correct answer to your question is a.) Dispersion.