Function key to select sales voucher is A. F8 B. F9 C. F4 D. F3

The correct answer is C. F4.

The function key F4 is used to select sales voucher in many accounting software programs. For example, in QuickBooks, pressing F4 will open the Sales Voucher window. In Sage 50, pressing F4 will open the Sales Voucher Entry window.

The other options are incorrect. F8 is used to insert a line break in many programs. F9 is used to recalculate formulas in many programs. F3 is used to open the Find and Replace dialog box in many programs.