When my sister was ill (1)/ I went to the hospital (2)/ on alternative days. (3)/ No error (4)

Options

A. 1. When my sister was ill
B. 2. I went to the hospital
C. 3. on alternative days.
D. 4.No error

Answer

3

Explanation

alternate will replace alternative because alternate (Adj.) : something happening on one day and not the next and continues in this pattern. It is used before Nouns
alternative (Adj.): substitute/other Look at the examples given below: Several members of the audience provided alternative views on the topic.
The service runs on alternate days.
Hence, on alternate days is the right usage