The constitutional convention limited the power of the executive branch by a.) establishing the electoral college.
b.)subjecting the president to the articles of confederation.
c.)subjecting the president to checks by congress.
d.)agreeing to the three-fifths compromise.

C.)subjecting the president to checks by Congress.

Explanation:

The constitutional convention was held in Philladelphia in 1787 and it was a convention with delegates from all the states of the union, except for Pennslvania, that aimed to change the lack f power that the executvie and central power had over the whole union, some states wanted a strong central power, while others didn´t, then they came to the realization of creating the bi-cameral system, where there would be a strong central figure (The president) that would be regulated by the Senates and The House of Representatives.