There are several functions in Excel that can automatically return the value in a cell based on the values in other cells. However, the specific function that can be used depends on the specific requirements of the task. Some of the functions that can be used include:

• Min(): This function can be used to automatically return the value found in cell C77 if it is the minimum value among the values in cells B77:B81.

• Max(): This function can be used to automatically return the value found in cell C77 if it is the maximum value among the values in cells B77:B81.

• Index(): This function can be used to return the value in a specific cell based on its position in an array. For example, if the values in cells B77:B81 are arranged in ascending order, the value in cell C77 can be returned using the formula =INDEX(B77:B81,1).

• Vlookup(): This function can be used to search for a specific value in a table and return a corresponding value from another column. For example, if the values in cells B77:B81 are part of a larger table, the value in cell C77 can be returned using the formula =VLOOKUP(B77,Table,2,FALSE), where "Table" is the range of the table and "2" is the column number of the value to be returned.

In addition to these functions, there are other techniques for returning values in Excel cells, such as typing in the value directly, using basic operations like addition and subtraction, and referencing a value from another cell using a cell reference.