QUES: Please make sure that the credit card is sufficiently funded

correct the punctuation.

CORRECTED: Please make sure that the credit card is sufficiently funded.

QUES: Hi my name is issabela and I am 19 years

correct the punctuation.

CORRECTED: Hi, my name is issabela and I am 19 years.

QUES: In his work in optics is described as follows

correct the punctuation.

CORRECTED:
In his work in optics is described as follows: