Questions & Answers about هذا الطعام أفضل من طعام المستشفى.
هذا means this and is used to point to a singular masculine noun.
Here it refers to الطعام (the food), which is grammatically masculine, so هذا is the correct demonstrative.
If the noun were feminine, you would usually use هذه instead.
هذا الطعام means this food. Adding هذا makes the noun specific.
- طعام = food
- الطعام = the food
- هذا الطعام = this food
Arabic often uses the demonstrative plus a definite noun, so this food is literally this the-food.
In Arabic, when you say this food, the noun after this is normally definite.
So:
- هذا الطعام = this food
not - هذا طعام in this context
That is a normal pattern in Arabic: demonstrative + definite noun.