Take context from the input text and decide on the accurate relationship between 'Direct Line' and 'Insurance' from the options provided.
Options: product/material produced, parent organization, developer, business division

Admiral Group (LSE: ADM.L - news ) , Direct Line , RSA Insurance (LSE: RSA.L - news ) and Esure made gains as Andreas van Embden, of Peel Hunt, said the index served as “an encouraging sign that a measure of discipline is returning to the motor market”.
product/material produced