Answer:
It is the first picture - the one with 3 columns and 5 rows, and 6 shaded boxes.
Explanation:
It is the first picture - the one with 3 columns and 5 rows, and 6 shaded boxes.
Each column represents a whole unit split into 5 parts.
2 parts of each column are shaded = 2/5
As there are 3 columns, then 3 x 2/5
ETA: Just to be very clear, as there appears to be some confusion in the comments under my answer, each COLUMN represents a whole unit. The rows are how many parts the column is split into.
Picture 1: 3 x 2/5
Picture 2: 5 x 3/5
Picture 3: 3 x 3/5
Picture 4: 5 x 2/3