Question

complete the sentence with the correct plural. charles j. van depoele, who invented electric blank in 1885, invested much of his time and money experimenting with electricity; in 1878, he created a lighting system for an evening circus performance. the word trolley is provided (in a bubble) to form the correct plural.

Explanation:

To form the plural of "trolley", since it ends in a consonant + "y", we change the "y" to "i" and add "es". So the plural of "trolley" is "trolleys".

Answer:

trolleys