Answer:
6
Step-by-step explanation:
There are four different kinds of meat items in the menu.
And we are asked for the combination of 2.
So, here n = 4 and k = 2.
That is from 4 we choose 2. Hence, 
We have the formula: 
Substituting, we get:

= 
= 6
Hence, there are six ways in which the meat combos can be made.