Which method was NOT used by the ECSA to raise funds?

Car washes are not a method utilized by the ECSA to raise funds. Instead, the ECSA focuses on fundraising strategies that typically align more closely with their mission and activities, such as raffles, horse shows, and concerts.

Raffles are common in community and non-profit fundraising, offering participants a chance to win prizes while contributing to a cause. Horse shows are likely closely related to the organization's core activities and can attract participants and spectators willing to support the event financially. Concerts can also serve as an engaging way to draw crowds and raise money through ticket sales and donations. These methods resonate well with the organization's audience and create opportunities for community involvement and awareness that enhance the fundraising process.