Answer:
In a restaurant, you are usually kindly attended by a waiter who takes your food order. And, therefore, you must respond kindly.
To order the food you may use the phrase I would like ... for me..., followed by please.
These phrases in Spanish are translated to:
quisiera... para mí...
I would like ... for me ...
por favor
please
For example:
Yo quisiera una carne asada para mí, por favor
I would like a roast for me, please
The other options:
De nada (you are welcome) and mucho gusto (Glad to meet you) do not match with this context, hence are incorrect.