Which of the following sentences contains an indefinite pronoun?

cad, or computer-aided design and drafting (cadd), is a software for design and technical documentation, which is an automated process as opposed to the manual drawing of plans. this gives a person an advance in making plans as an architect in a short period of time. one who can render plans through this software will gain a skill that is better than one who makes plans manually. this is a skill some companies look for in an employee.

i think these large heads represent their gods and i do think they were worshiped by the people. if there was only one head and no heads around it i think it would be monotheistic but if there are several heads close to each other it could be polytheistic.

buddhists follow great values like treating people with equal rights and looking after everyone with kindness. the lord buddha did his best to his followers and those who needed mandala is a man with great values and has done a great job throughout his life for others instead of being selfish like politicians these days