Explanation:

Sure, let’s break down the options:

- Option 1: Murdock

Murdock is known for his cross-cultural studies on family and kinship, but he didn’t coin the term ‘kinship algebra.’

- Option 2: Malinowski

Malinowski focused on functionalism and family structures, especially the Trobriand Islanders—he talked a lot about culture, but not about ‘kinship algebra.’

- Option 3: Radcliffe-Brown

Now, Radcliffe-Brown is the one who actually described kinship systems using the idea of a systematic ‘algebra’ of relationships.

- Option 4: Shane Warne

Shane Warne, as celebrated as he is in cricket, has nothing to do with kinship theory.

So, the correct answer is:

- Option 3: Radcliffe-Brown

Radcliffe-Brown is the anthropologist behind the concept of ‘kinship algebra.’ Malinowski didn’t describe kinship this way.