_____ lets users show their location with websites they trust.

Modern web browsers expose a permission-gated location mechanism: it determines a device's approximate physical position — via GPS, Wi-Fi access points, cell towers, or IP address — and hands those coordinates to a requesting website, but only after the user explicitly grants consent. This is what lets a user choose to reveal their location to sites they trust while keeping it hidden from everyone else.

This exact permission-based location-sharing mechanism is what browsers standardize as Geolocation (the Geolocation API), so the blank is filled by Geolocation.

• Geotrust is a commercial certificate authority that issues SSL/TLS certificates to secure and authenticate a website's connection — it verifies a site's identity, it does not share a user's physical location.

• Loctrust is not a recognized web technology or standard; it does not name any browser-based location-sharing feature.

• OLTrust is likewise not an established term in this domain and does not correspond to any real location-sharing API.

So among the offered terms, only Geolocation names a real permission-based location-sharing technology.