Which of the following can affect the amount of funds available to lenders for mortgage loans

While wage levels can influence borrowers' ability to repay loans and thus affect demand for mortgages, they do not directly impact the supply of funds that lenders can access. Wage changes primarily alter how much consumers are willing to borrow rather than the actual availability of funds from lenders.

Demographic changes can influence housing demand and the types of mortgage products that might be sought, but they do not inherently affect the supply of funds available to lenders. Lenders' access to capital is more closely linked to regulatory and monetary conditions than to demographic trends.

Construction and labor costs can impact housing market dynamics and home prices, affecting the overall real estate market. However, they do not directly influence the amount of funds that lenders have available for mortgage loans. Instead, these costs affect the demand side of the market rather than the supply of capital.