I wouldn’t be comfortable getting into the details of the actual “Higgs field” is, nor the Higgs boson, as I am not confident in my understanding, but, for the sake of the meme, the following excerpt from Wikipedia should suffice:
via the Higgs mechanism, [the Higgs boson] gives a rest mass to all massive elementary particles of the Standard Model, including the Higgs boson itself. [source]
I assumed it was gravity.
Gravity can be understood as the attractive force that two massive objects impart on eachother [1.1] — the strength of the gravitational force imparted by one object onto another is proportional to the mass of the former object [1.2]. Do note that this is a simplification. Gravity, as far as it is currently understood, is quite a bit more complicated than this (I am primarily referring to General Relativity) [1].
References1. “Gravity”. Wikipedia. Accessed: 2024-08-13T03:35Z. en.wikipedia.org/wiki/Gravity. 1. > gravity is a fundamental interaction primarily observed as mutual attraction between all things that have mass. 2. > $$F = \frac{Gm_1m_2}{r^2}$$ > where $F$ is the force, $m_1$ and $m_2$ are the masses of the objects interacting, $r$ is the distance between the centers of the masses and $G$ is the gravitational constant