Differentiate between mora debitoris and mora creditoris.

$(4)$

Takalani, aged $17,$ buys a washing machine from Maria on credit for the amount of R$3500.$ He received the appliance from Maria but must still pay her the amount by $1$ April. On the due date, Takalani forgets to pay her.

a$.$ Assess the obligation in this example

$(2)$

b$.$ Indicate the creditor in this example

$(1)$

c$.$ Conclude whether this transaction constitutes a contract. Provide reasons.

$(5)$

d$.$ Analyse how your answer in question $($c$)$ would change if Takalani was married.

$(3)$

$[15]$