Answer:
The correct sentence is: Esa mesa es amarilla.
Step-by-step explanation:
The correct sentence is: Esa mesa es amarilla. This means: that table is yellow. The second sentence, “aquellas mesa es amarilla” is incorrect because aquellas makes reference to a plural noun and mesa is singular. It would be correct if it said: aquella mesa es amarilla. The other sentence “este mesa es amarilla” is incorrect because “este” makes reference to a male noun and mesa is female. It would be correct if it said “esta mesa es amarilla”, which would mean “this table is yellow”.