Improve the underlined part of the sentence. Choose 'No improvement' as an answer if the sentence is grammatically correct.
The students studied a diagrams of a plant cell.
1
studied a diagram
2
study a diagrams
3
studying a diagram
4
No improvement
Improve the underlined part of the sentence. Choose 'No improvement' as an answer if the sentence is grammatically correct.
The students studied a diagrams of a plant cell.